IPv6 (English Wikipedia)

Narten, T. (August 1999). "Neighbor discovery and stateless autoconfiguration in IPv6". IEEE Internet Computing. 3 (4): 54–62. Bibcode:1999IIC.....3d..54N. doi:10.1109/4236.780961.

afrinic.net (Global: low place; English: low place)

"AFRINIC enters IPv4 Exhaustion Phase 2". afrinic.net. 13 January 2020. Retrieved 10 June 2026.

akamai.com (Global: low place; English: low place)

"State of the Internet / IPv6 Adoption Visualization". Akamai. Archived from the original on 11 November 2020. Retrieved 15 December 2025.

apnic.net (Global: low place; English: low place)

stats.labs.apnic.net

"IPv6 Fragmentation Drop Rate World Map". APNIC. Retrieved 11 August 2026.

blog.apnic.net

Pujol, Enric (12 June 2017). "What Stops IPv6 Traffic in a Dual-Stack ISP?". APNIC.net. APNIC. Archived from the original on 27 March 2023. Retrieved 13 June 2017.

arin.net (Global: low place; English: low place)

"The History of IPv6 @ ARIN". www.arin.net. Retrieved 8 July 2026.

bbc.co.uk (Global: 11^th place; English: 10^th place)

Ward, Mark (14 September 2012). "Europe hits old internet address limits". BBC News. Archived from the original on 5 November 2023. Retrieved 15 September 2012.

beijing2008.cn (Global: 4,933^rd place; English: 3,798^th place)

en.beijing2008.cn

"Beijing2008.cn leaps to next-generation Net" (Press release). The Beijing Organizing Committee for the Games of the XXIX Olympiad. 30 May 2008. Archived from the original on 4 February 2009.

bgp.tools (Global: low place; English: low place)

"The case of Hurricane Electric And Cogent". BGP.tools. Retrieved 10 September 2024.

books.google.com (Global: 3^rd place; English: 3^rd place)

Graziani, Rick (2012). IPv6 Fundamentals: A Straightforward Approach to Understanding IPv6. Cisco Press. p. 55. ISBN 978-0-13-303347-2. Retrieved 10 June 2026.
Coffeen, Tom (2014). IPv6 Address Planning: Designing an Address Plan for the Future. O'Reilly Media. p. 170. ISBN 978-1-4919-0326-1. Retrieved 10 June 2026.
Horley, Edward (2013). Practical IPv6 for Windows Administrators. Apress. p. 17. ISBN 978-1-4302-6371-5. Retrieved 10 June 2026.

circleid.com (Global: low place; English: low place)

Morr, Derek (9 June 2009). "Verizon Mandates IPv6 Support for Next-Gen Cell Phones". CircleID. Retrieved 10 June 2026.

comcast.com (Global: low place; English: low place)

corporate.comcast.com

Brzozowski, John (31 January 2011). "Comcast Activates First Users With IPv6 Native Dual Stack Over DOCSIS" (Press release). Comcast. Archived from the original on 23 October 2023. Retrieved 15 April 2019.

doi.org (Global: 2^nd place; English: 2^nd place)

S. Deering; R. Hinden (December 1998). Internet Protocol, Version 6 (IPv6) Specification. Network Working Group. doi:10.17487/RFC2460. RFC 2460. Obsolete. Obsoleted by RFC 8200. Obsoletes RFC 1883. Updated by RFC 5095, 5722, 5871, 6437, 6564, 6935, 6946, 7045 and 7112.
S. Deering; R. Hinden (July 2017). Internet Protocol, Version 6 (IPv6) Specification. Internet Engineering Task Force. doi:10.17487/RFC8200. STD 86. RFC 8200. Internet Standard 86. Obsoletes RFC 2460.
R. Hinden; S. Deering (February 2006). IP Version 6 Addressing Architecture. Network Working Group. doi:10.17487/RFC4291. RFC 4291. Draft Standard. Obsoletes RFC 3513. Updated by RFC 5952, 6052, 7136, 7346, 7371 and 8064.
Bradner, S.; Mankin, A. (January 1995). The Recommendation for the IP Next Generation Protocol. IETF. doi:10.17487/RFC1752. RFC 1752.
C. Partridge; F. Kastenholz (December 1994). Technical Criteria for Choosing IP The Next Generation (IPng). Network Working Group. doi:10.17487/RFC1726. RFC 1726. Informational.
S. Deering (August 1989). Host Extensions for IP Multicasting. Network Working Group. doi:10.17487/RFC1112. STD 5. RFC 1112. Internet Standard 5. Obsoletes RFC 988 and 1054. Updated by RFC 2236.
P. Savola; B. Haberman (November 2004). Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address. Network Working Group. doi:10.17487/RFC3956. RFC 3956. Proposed Standard. Updated by RFC 7371. Updates RFC 3306.
D. Thaler; M. Handley; D. Estrin (September 2000). The Internet Multicast Address Allocation Architecture. Network Working Group. doi:10.17487/RFC2908. RFC 2908. Obsolete. Obsoleted by RFC 6308.
B. Haberman; D. Thaler (August 2002). Unicast-Prefix–based IPv6 Multicast Addresses. Network Working Group. doi:10.17487/RFC3306. RFC 3306. Proposed Standard. Updated by RFC 3956, 4489 and 7371.
S. Thomson; T. Narten; T. Jinmei (September 2007). IPv6 Stateless Address Autoconfiguration. Network Working Group. doi:10.17487/RFC4862. RFC 4862. Draft Standard. Obsoletes RFC 2462. Updated by RFC 7527.
M. Crawford (August 2000). Router Renumbering for IPv6. Network Working Group. doi:10.17487/RFC2894. RFC 2894. Proposed Standard.
F. Gont; S. Krishnan; T. Narten; R. Draves (February 2021). Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6. Internet Engineering Task Force. doi:10.17487/RFC8981. ISSN 2070-1721. RFC 8981. Proposed Standard. Obsoletes RFC 4941.
Ferguson, P.; Berkowitz, H. (January 1997). "Network Renumbering Overview: Why would I want it and what is it anyway?". IETF. doi:10.17487/RFC2071. RFC 2071. Archived from the original on 7 January 2024. Retrieved 10 June 2026.
Berkowitz, H. (January 1997). "Router Renumbering Guide". IETF. doi:10.17487/RFC2072. RFC 2072. Archived from the original on 8 June 2023. Retrieved 10 June 2026.
Cooper, Alissa; Gont, Fernando; Thaler, Dave. Recommendation on Stable IPv6 Interface Identifiers. IETF. doi:10.17487/RFC8064. RFC 8064.
E. Jankiewicz; J. Loughney; T. Narten (December 2011). IPv6 Node Requirements. Internet Engineering Task Force. doi:10.17487/RFC6434. ISSN 2070-1721. RFC 6434. Obsolete. p. 17. Obsoleted by RFC 8504. Obsoletes RFC 4294. Previously, IPv6 mandated implementation of IPsec and recommended the key management approach of IKE. This document updates that recommendation by making support of the IPsec Architecture RFC4301 a SHOULD for all IPv6 nodes.
V. Devarapalli; R. Wakikawa; A. Petrescu; P. Thubert (January 2005). Network Mobility (NEMO) Basic Support Protocol. Network Working Group. doi:10.17487/RFC3963. RFC 3963. Proposed Standard.
D. Borman; S. Deering; R. Hinden (August 1999). IPv6 Jumbograms. Network Working Group. doi:10.17487/RFC2675. RFC 2675. Proposed Standard. Obsoletes RFC 2147.
K. Nichols; S. Blake; F. Baker; D. Black (December 1998). Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. Network Working Group. doi:10.17487/RFC2474. RFC 2474. Proposed Standard. Obsoletes RFC 1455 and 1349. Updated by RFC 3168, 3260 and 8436.
K. Ramakrishnan; S. Floyd; D. Black (September 2001). The Addition of Explicit Congestion Notification (ECN) to IP. Network Working Group. doi:10.17487/RFC3168. RFC 3168. Proposed Standard. Obsoletes RFC 2481. Updates RFC 2474, 2401 and 793. Updated by RFC 4301, 6040 and 8311.
Network Reconnaissance in IPv6 Networks. IETF. doi:10.17487/RFC7707. RFC 7707.
S. Kawamura; M. Kawashima (August 2010). A Recommendation for IPv6 Address Text Representation. Internet Engineering Task Force. doi:10.17487/RFC5952. ISSN 2070-1721. RFC 5952. Proposed Standard. Updates RFC 4291.
M. Blanchet (April 2008). Special-Use IPv6 Addresses. Network Working Group. doi:10.17487/RFC5156. RFC 5156. Proposed Standard. Obsoleted by RFC 6890.
T. Berners-Lee; R. Fielding; L. Masinter (January 2005). Uniform Resource Identifier (URI): Generic Syntax. Network Working Group. doi:10.17487/RFC3986. STD 66. RFC 3986. Internet Standard 66. Obsoletes RFC 2732, 2396 and 1808. Updated by RFC 6874, 7320 and 8820. Updates RFC 1738.
Narten, T. (August 1999). "Neighbor discovery and stateless autoconfiguration in IPv6". IEEE Internet Computing. 3 (4): 54–62. Bibcode:1999IIC.....3d..54N. doi:10.1109/4236.780961.
Narten, T. (September 2007). "Neighbor Discovery for IP version 6 (IPv6)". IETF. section 6.3.7. doi:10.17487/RFC4861. RFC 4861. Archived from the original on 17 January 2024. Retrieved 10 June 2026.
Thomson, S. (September 2007). "IPv6 Stateless Address Autoconfiguration - Section 5.5.1". IETF. doi:10.17487/RFC4862. RFC 4862. Archived from the original on 11 January 2024. Retrieved 10 June 2026.
IAB; IESG (September 2001). IAB/IESG Recommendations on IPv6 Address Allocations to Sites. Network Working Group. doi:10.17487/RFC3177. RFC 3177. Obsolete. Obsoleted by RFC 6177.
T. Narten; G. Huston; L. Roberts (March 2011). IPv6 Address Assignment to End Sites. Internet Engineering Task Force. doi:10.17487/RFC6177. ISSN 2070-1721. BCP 157. RFC 6177. Best Current Practice 157. Obsoletes RFC 3177.
S. Thomson; C. Huitema; V. Ksinant; M. Souissi (October 2003). DNS Extensions to Support IP Version 6. Network Working Group. doi:10.17487/RFC3596. STD 88. RFC 3596. Internet Standard 88. Obsoletes RFC 3152 and 1886.
D. Thaler; R. Draves; A. Matsumoto; T. Chown (September 2012). D. Thaler (ed.). Default Address Selection for Internet Protocol Version 6 (IPv6). Internet Engineering Task Force. doi:10.17487/RFC6724. ISSN 2070-1721. RFC 6724. Proposed Standard. Obsoletes RFC 3484.
M. Crawford; C. Huitema (July 2000). DNS Extensions to Support IPv6 Address Aggregation and Renumbering. Network Working Group. doi:10.17487/RFC2874. RFC 2874. Historic. Updated by RFC 3152, 3226, 3363 and 3364. Updates RFC 1886.
R. Austein (August 2002). Tradeoffs in Domain Name System (DNS) Support for Internet Protocol version 6 (IPv6). Network Working Group. doi:10.17487/RFC3364. RFC 3364. Informational. Updates RFC 2673 and 2874.
R. Bush; A. Durand; B. Fink; O. Gudmundsson; T. Hain, eds. (August 2002). Representing Internet Protocol version 6 (IPv6) Addresses in the Domain Name System (DNS). Network Working Group. doi:10.17487/RFC3363. RFC 3363. Informational. Updates RFC 2673 and 2874.
Carpenter, B. (August 2011). "Advisory Guidelines for 6to4 Deployment". IETF. doi:10.17487/RFC6343. RFC 6343. Archived from the original on 28 January 2023. Retrieved 20 August 2012.
E. Nordmark; R. Gilligan (October 2005). Basic Transition Mechanisms for IPv6 Hosts and Routers. Network Working Group. doi:10.17487/RFC4213. RFC 4213. Proposed Standard. Obsoletes RFC 2893.
M. Cotton; L. Vegoda; B. Haberman (April 2013). R. Bonica (ed.). Special-Purpose IP Address Registries. Internet Engineering Task Force. doi:10.17487/RFC6890. ISSN 2070-1721. BCP 153. RFC 6890. Best Current Practice 153. Obsoletes RFC 4773, 5156, 5735 and 5736. Updated by RFC 8190.
R. Gilligan; S. Thomson; J. Bound; J. McCann; W. Stevens (February 2003). Basic Socket Interface Extensions for IPv6. Network Working Group. doi:10.17487/RFC3493. RFC 3493.
C. Bao; C. Huitema; M. Bagnulo; M. Boucadair; X. Li (October 2010). IPv6 Addressing of IPv4/IPv6 Translators. Internet Engineering Task Force. doi:10.17487/RFC6052. ISSN 2070-1721. RFC 6052. Proposed Standard. Updates RFC 4291.
F. Gont; V. Manral; R. Bonica (January 2014). Implications of Oversized IPv6 Header Chains. Internet Engineering Task Force. doi:10.17487/RFC7112. ISSN 2070-1721. RFC 7112. Proposed Standard. Updates RFC 2460.
F. Gont (February 2014). Implementation Advice for IPv6 Router Advertisement Guard (RA-Guard). Internet Engineering Task Force. doi:10.17487/RFC7113. ISSN 2070-1721. RFC 7113. Informational. Updates RFC 6105.
F. Gont (August 2013). Security Implications of IPv6 Fragmentation with IPv6 Neighbor Discovery. Internet Engineering Task Force. doi:10.17487/RFC6980. ISSN 2070-1721. RFC 6980. Proposed Standard. Updates RFC 3971 and 4861.
Wang, Tao; Gao, Jiaqiong (1 January 2019). "The Shortcomings of Ipv6 and Upgrade of Ipv4". International Journal of Advanced Network, Monitoring and Controls. 4 (1): 1–9. doi:10.21307/ijanmc-2019-029.

eweek.com (Global: 8,041^st place; English: 5,594^th place)

Rashid, Fahmida (1 February 2011). "IPv4 Address Exhaustion Not Instant Cause for Concern with IPv6 in Wings". eWeek. Retrieved 23 June 2012.{{cite web}}: CS1 maint: url-status (link)

ghostarchive.org (Global: 64^th place; English: 28^th place)

Google IPv6 Conference 2008: What will the IPv6 Internet look like?. Event occurs at 13:35. Archived from the original on 11 December 2021. Retrieved 10 June 2026.

google.com (Global: 109^th place; English: 87^th place)

"IPv6 Adoption". Retrieved 15 December 2025.

ietf.org (Global: 731^st place; English: 625^th place)

datatracker.ietf.org

S. Deering; R. Hinden (December 1998). Internet Protocol, Version 6 (IPv6) Specification. Network Working Group. doi:10.17487/RFC2460. RFC 2460. Obsolete. Obsoleted by RFC 8200. Obsoletes RFC 1883. Updated by RFC 5095, 5722, 5871, 6437, 6564, 6935, 6946, 7045 and 7112.
S. Deering; R. Hinden (July 2017). Internet Protocol, Version 6 (IPv6) Specification. Internet Engineering Task Force. doi:10.17487/RFC8200. STD 86. RFC 8200. Internet Standard 86. Obsoletes RFC 2460.
Deering, Steve E.; Hinden, Bob (February 2006). IP Version 6 Addressing Architecture (Report). Internet Engineering Task Force.
Kawamura, Seiichi; Kawashima, Masanobu (August 2010). A Recommendation for IPv6 Address Text Representation (Report). Internet Engineering Task Force.
R. Hinden; S. Deering (February 2006). IP Version 6 Addressing Architecture. Network Working Group. doi:10.17487/RFC4291. RFC 4291. Draft Standard. Obsoletes RFC 3513. Updated by RFC 5952, 6052, 7136, 7346, 7371 and 8064.
Bradner, S.; Mankin, A. (January 1995). The Recommendation for the IP Next Generation Protocol. IETF. doi:10.17487/RFC1752. RFC 1752.
C. Partridge; F. Kastenholz (December 1994). Technical Criteria for Choosing IP The Next Generation (IPng). Network Working Group. doi:10.17487/RFC1726. RFC 1726. Informational.
S. Deering (August 1989). Host Extensions for IP Multicasting. Network Working Group. doi:10.17487/RFC1112. STD 5. RFC 1112. Internet Standard 5. Obsoletes RFC 988 and 1054. Updated by RFC 2236.
P. Savola; B. Haberman (November 2004). Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address. Network Working Group. doi:10.17487/RFC3956. RFC 3956. Proposed Standard. Updated by RFC 7371. Updates RFC 3306.
D. Thaler; M. Handley; D. Estrin (September 2000). The Internet Multicast Address Allocation Architecture. Network Working Group. doi:10.17487/RFC2908. RFC 2908. Obsolete. Obsoleted by RFC 6308.
B. Haberman; D. Thaler (August 2002). Unicast-Prefix–based IPv6 Multicast Addresses. Network Working Group. doi:10.17487/RFC3306. RFC 3306. Proposed Standard. Updated by RFC 3956, 4489 and 7371.
S. Thomson; T. Narten; T. Jinmei (September 2007). IPv6 Stateless Address Autoconfiguration. Network Working Group. doi:10.17487/RFC4862. RFC 4862. Draft Standard. Obsoletes RFC 2462. Updated by RFC 7527.
M. Crawford (August 2000). Router Renumbering for IPv6. Network Working Group. doi:10.17487/RFC2894. RFC 2894. Proposed Standard.
F. Gont; S. Krishnan; T. Narten; R. Draves (February 2021). Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6. Internet Engineering Task Force. doi:10.17487/RFC8981. ISSN 2070-1721. RFC 8981. Proposed Standard. Obsoletes RFC 4941.
Ferguson, P.; Berkowitz, H. (January 1997). "Network Renumbering Overview: Why would I want it and what is it anyway?". IETF. doi:10.17487/RFC2071. RFC 2071. Archived from the original on 7 January 2024. Retrieved 10 June 2026.
Berkowitz, H. (January 1997). "Router Renumbering Guide". IETF. doi:10.17487/RFC2072. RFC 2072. Archived from the original on 8 June 2023. Retrieved 10 June 2026.
Cooper, Alissa; Gont, Fernando; Thaler, Dave. Recommendation on Stable IPv6 Interface Identifiers. IETF. doi:10.17487/RFC8064. RFC 8064.
E. Jankiewicz; J. Loughney; T. Narten (December 2011). IPv6 Node Requirements. Internet Engineering Task Force. doi:10.17487/RFC6434. ISSN 2070-1721. RFC 6434. Obsolete. p. 17. Obsoleted by RFC 8504. Obsoletes RFC 4294. Previously, IPv6 mandated implementation of IPsec and recommended the key management approach of IKE. This document updates that recommendation by making support of the IPsec Architecture RFC4301 a SHOULD for all IPv6 nodes.
Gont, F. (March 2016). "Operational Implications of IPv6 Packets with Extension Headers". IETF. Archived from the original on 27 October 2023.
V. Devarapalli; R. Wakikawa; A. Petrescu; P. Thubert (January 2005). Network Mobility (NEMO) Basic Support Protocol. Network Working Group. doi:10.17487/RFC3963. RFC 3963. Proposed Standard.
D. Borman; S. Deering; R. Hinden (August 1999). IPv6 Jumbograms. Network Working Group. doi:10.17487/RFC2675. RFC 2675. Proposed Standard. Obsoletes RFC 2147.
K. Nichols; S. Blake; F. Baker; D. Black (December 1998). Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. Network Working Group. doi:10.17487/RFC2474. RFC 2474. Proposed Standard. Obsoletes RFC 1455 and 1349. Updated by RFC 3168, 3260 and 8436.
K. Ramakrishnan; S. Floyd; D. Black (September 2001). The Addition of Explicit Congestion Notification (ECN) to IP. Network Working Group. doi:10.17487/RFC3168. RFC 3168. Proposed Standard. Obsoletes RFC 2481. Updates RFC 2474, 2401 and 793. Updated by RFC 4301, 6040 and 8311.
Network Reconnaissance in IPv6 Networks. IETF. doi:10.17487/RFC7707. RFC 7707.
S. Kawamura; M. Kawashima (August 2010). A Recommendation for IPv6 Address Text Representation. Internet Engineering Task Force. doi:10.17487/RFC5952. ISSN 2070-1721. RFC 5952. Proposed Standard. Updates RFC 4291.
M. Blanchet (April 2008). Special-Use IPv6 Addresses. Network Working Group. doi:10.17487/RFC5156. RFC 5156. Proposed Standard. Obsoleted by RFC 6890.
T. Berners-Lee; R. Fielding; L. Masinter (January 2005). Uniform Resource Identifier (URI): Generic Syntax. Network Working Group. doi:10.17487/RFC3986. STD 66. RFC 3986. Internet Standard 66. Obsoletes RFC 2732, 2396 and 1808. Updated by RFC 6874, 7320 and 8820. Updates RFC 1738.
Narten, T. (September 2007). "Neighbor Discovery for IP version 6 (IPv6)". IETF. section 6.3.7. doi:10.17487/RFC4861. RFC 4861. Archived from the original on 17 January 2024. Retrieved 10 June 2026.
Thomson, S. (September 2007). "IPv6 Stateless Address Autoconfiguration - Section 5.5.1". IETF. doi:10.17487/RFC4862. RFC 4862. Archived from the original on 11 January 2024. Retrieved 10 June 2026.
IAB; IESG (September 2001). IAB/IESG Recommendations on IPv6 Address Allocations to Sites. Network Working Group. doi:10.17487/RFC3177. RFC 3177. Obsolete. Obsoleted by RFC 6177.
T. Narten; G. Huston; L. Roberts (March 2011). IPv6 Address Assignment to End Sites. Internet Engineering Task Force. doi:10.17487/RFC6177. ISSN 2070-1721. BCP 157. RFC 6177. Best Current Practice 157. Obsoletes RFC 3177.
S. Thomson; C. Huitema; V. Ksinant; M. Souissi (October 2003). DNS Extensions to Support IP Version 6. Network Working Group. doi:10.17487/RFC3596. STD 88. RFC 3596. Internet Standard 88. Obsoletes RFC 3152 and 1886.
D. Thaler; R. Draves; A. Matsumoto; T. Chown (September 2012). D. Thaler (ed.). Default Address Selection for Internet Protocol Version 6 (IPv6). Internet Engineering Task Force. doi:10.17487/RFC6724. ISSN 2070-1721. RFC 6724. Proposed Standard. Obsoletes RFC 3484.
M. Crawford; C. Huitema (July 2000). DNS Extensions to Support IPv6 Address Aggregation and Renumbering. Network Working Group. doi:10.17487/RFC2874. RFC 2874. Historic. Updated by RFC 3152, 3226, 3363 and 3364. Updates RFC 1886.
R. Austein (August 2002). Tradeoffs in Domain Name System (DNS) Support for Internet Protocol version 6 (IPv6). Network Working Group. doi:10.17487/RFC3364. RFC 3364. Informational. Updates RFC 2673 and 2874.
R. Bush; A. Durand; B. Fink; O. Gudmundsson; T. Hain, eds. (August 2002). Representing Internet Protocol version 6 (IPv6) Addresses in the Domain Name System (DNS). Network Working Group. doi:10.17487/RFC3363. RFC 3363. Informational. Updates RFC 2673 and 2874.
Carpenter, B. (August 2011). "Advisory Guidelines for 6to4 Deployment". IETF. doi:10.17487/RFC6343. RFC 6343. Archived from the original on 28 January 2023. Retrieved 20 August 2012.
E. Nordmark; R. Gilligan (October 2005). Basic Transition Mechanisms for IPv6 Hosts and Routers. Network Working Group. doi:10.17487/RFC4213. RFC 4213. Proposed Standard. Obsoletes RFC 2893.
M. Cotton; L. Vegoda; B. Haberman (April 2013). R. Bonica (ed.). Special-Purpose IP Address Registries. Internet Engineering Task Force. doi:10.17487/RFC6890. ISSN 2070-1721. BCP 153. RFC 6890. Best Current Practice 153. Obsoletes RFC 4773, 5156, 5735 and 5736. Updated by RFC 8190.
R. Gilligan; S. Thomson; J. Bound; J. McCann; W. Stevens (February 2003). Basic Socket Interface Extensions for IPv6. Network Working Group. doi:10.17487/RFC3493. RFC 3493.
C. Bao; C. Huitema; M. Bagnulo; M. Boucadair; X. Li (October 2010). IPv6 Addressing of IPv4/IPv6 Translators. Internet Engineering Task Force. doi:10.17487/RFC6052. ISSN 2070-1721. RFC 6052. Proposed Standard. Updates RFC 4291.
F. Gont; V. Manral; R. Bonica (January 2014). Implications of Oversized IPv6 Header Chains. Internet Engineering Task Force. doi:10.17487/RFC7112. ISSN 2070-1721. RFC 7112. Proposed Standard. Updates RFC 2460.
F. Gont (February 2014). Implementation Advice for IPv6 Router Advertisement Guard (RA-Guard). Internet Engineering Task Force. doi:10.17487/RFC7113. ISSN 2070-1721. RFC 7113. Informational. Updates RFC 6105.
F. Gont (August 2013). Security Implications of IPv6 Fragmentation with IPv6 Neighbor Discovery. Internet Engineering Task Force. doi:10.17487/RFC6980. ISSN 2070-1721. RFC 6980. Proposed Standard. Updates RFC 3971 and 4861.

tools.ietf.org

Ferguson, P.; Berkowitz, H. (January 1997). "Network Renumbering Overview: Why would I want it and what is it anyway?". IETF. doi:10.17487/RFC2071. RFC 2071. Archived from the original on 7 January 2024. Retrieved 10 June 2026.
Berkowitz, H. (January 1997). "Router Renumbering Guide". IETF. doi:10.17487/RFC2072. RFC 2072. Archived from the original on 8 June 2023. Retrieved 10 June 2026.
Narten, T. (September 2007). "Neighbor Discovery for IP version 6 (IPv6)". IETF. section 6.3.7. doi:10.17487/RFC4861. RFC 4861. Archived from the original on 17 January 2024. Retrieved 10 June 2026.
Thomson, S. (September 2007). "IPv6 Stateless Address Autoconfiguration - Section 5.5.1". IETF. doi:10.17487/RFC4862. RFC 4862. Archived from the original on 11 January 2024. Retrieved 10 June 2026.
Carpenter, B. (August 2011). "Advisory Guidelines for 6to4 Deployment". IETF. doi:10.17487/RFC6343. RFC 6343. Archived from the original on 28 January 2023. Retrieved 20 August 2012.
Jun-ichiro itojun Hagino (October 2003). "IPv4-Mapped Addresses on the Wire Considered Harmful". Retrieved 10 June 2026.
Bradner, S.; Mankin, A. (December 1993). "IP: Next Generation (IPng) White Paper Solicitation". RFC 1550. Retrieved 10 June 2026.
Bradner, Scott O.; Mankin, Allison J. (January 1995). "The Recommendation for the IP Next Generation Protocol – Appendix B". RFC 1752. Retrieved 10 June 2026.

internetsociety.org (Global: low place; English: low place)

Siddiqui, Aftab (17 July 2017). "RFC 8200 – IPv6 Has Been Standardized". Internet Society. Archived from the original on 23 October 2023. Retrieved 25 February 2018.
T. Narten; R. Draves; S. Krishnan (September 2007). "Privacy Extensions for Stateless Address Autoconfiguration in IPv6". www.ietf.org. Retrieved 13 March 2017.
Gont, Fernando (10 March 2019), IPv6 Security for IPv4 Engineers (PDF), retrieved 30 August 2019
Gont, Fernando (10 January 2019), IPv6 Security Frequently Asked Questions (FAQ) (PDF), retrieved 30 August 2019
State of IPv6 Deployment 2018, Internet Society, 2018, p. 3, retrieved 10 June 2026
"State of IPv6 Deployment 2018" (PDF). InternetSociety.org. Internet Society. Retrieved 19 January 2022.

ipv6.com (Global: low place; English: low place)

Das, Kaushik (2008). "IPv6 and the 2008 Beijing Olympics". IPv6.com. Archived from the original on 1 August 2008. Retrieved 15 August 2008.

ipv6.org.nz (Global: low place; English: low place)

"FAQs". New Zealand IPv6 Task Force. Archived from the original on 29 January 2019. Retrieved 26 October 2015.

ipv6forum.com (Global: low place; English: low place)

Cicileo, Guillermo; Gagliano, Roque; O'Flaherty, Christian; et al. (October 2009). IPv6 For All: A Guide for IPv6 Usage and Application in Different Environments (PDF). p. 5. Retrieved 2 March 2013.

ipv6hackers.org (Global: low place; English: low place)

Zack, E. (July 2013). "IPv6 Security Assessment and Benchmarking". www.ipv6hackers.org. Retrieved 10 June 2026.

juniper.net (Global: low place; English: low place)

"Understanding Dual Stacking of IPv4 and IPv6 Unicast Addresses". Juniper.net. Juniper Networks. 31 August 2017. Retrieved 19 January 2022.

kiemtraip.vn (Global: low place; English: low place)

Sauer, Pjotr (10 June 2026). "check ip". Retrieved 10 June 2026.

networkcomputing.com (Global: low place; English: low place)

Mullins, Robert (5 April 2012), "Shadow Networks: an Unintended IPv6 Side Effect", Network Computing, archived from the original on 11 April 2013, retrieved 2 March 2013

networkworld.com (Global: 5,743^rd place; English: 3,776^th place)

"IPv6: Dual stack where you can; tunnel where you must". networkworld.com. 5 September 2007. Archived from the original on 20 January 2024. Retrieved 27 November 2012.

nro.net (Global: low place; English: low place)

"Free Pool of IPv4 Address Space Depleted". NRO.net. Montevideo: The Number Resource Organization. 3 February 2011. Archived from the original on 18 January 2024. Retrieved 19 January 2022.
"IPv6". NRO.net. Archived from the original on 12 January 2017. Retrieved 13 March 2017.

openbsd.org (Global: low place; English: 9,957^th place)

man.openbsd.org

inet6(4) – OpenBSD Kernel Interfaces Manual

potaroo.net (Global: low place; English: low place)

Huston, Geoff. "IPV4 Address Report". Archived from the original on 10 January 2024.

rfc-editor.org (Global: 747^th place; English: 325^th place)

S. Deering; R. Hinden (December 1998). Internet Protocol, Version 6 (IPv6) Specification. Network Working Group. doi:10.17487/RFC2460. RFC 2460. Obsolete. Obsoleted by RFC 8200. Obsoletes RFC 1883. Updated by RFC 5095, 5722, 5871, 6437, 6564, 6935, 6946, 7045 and 7112.
S. Deering; R. Hinden (July 2017). Internet Protocol, Version 6 (IPv6) Specification. Internet Engineering Task Force. doi:10.17487/RFC8200. STD 86. RFC 8200. Internet Standard 86. Obsoletes RFC 2460.
R. Hinden; S. Deering (February 2006). IP Version 6 Addressing Architecture. Network Working Group. doi:10.17487/RFC4291. RFC 4291. Draft Standard. Obsoletes RFC 3513. Updated by RFC 5952, 6052, 7136, 7346, 7371 and 8064.
Bradner, S.; Mankin, A. (January 1995). The Recommendation for the IP Next Generation Protocol. IETF. doi:10.17487/RFC1752. RFC 1752.
C. Partridge; F. Kastenholz (December 1994). Technical Criteria for Choosing IP The Next Generation (IPng). Network Working Group. doi:10.17487/RFC1726. RFC 1726. Informational.
S. Deering (August 1989). Host Extensions for IP Multicasting. Network Working Group. doi:10.17487/RFC1112. STD 5. RFC 1112. Internet Standard 5. Obsoletes RFC 988 and 1054. Updated by RFC 2236.
P. Savola; B. Haberman (November 2004). Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address. Network Working Group. doi:10.17487/RFC3956. RFC 3956. Proposed Standard. Updated by RFC 7371. Updates RFC 3306.
D. Thaler; M. Handley; D. Estrin (September 2000). The Internet Multicast Address Allocation Architecture. Network Working Group. doi:10.17487/RFC2908. RFC 2908. Obsolete. Obsoleted by RFC 6308.
B. Haberman; D. Thaler (August 2002). Unicast-Prefix–based IPv6 Multicast Addresses. Network Working Group. doi:10.17487/RFC3306. RFC 3306. Proposed Standard. Updated by RFC 3956, 4489 and 7371.
S. Thomson; T. Narten; T. Jinmei (September 2007). IPv6 Stateless Address Autoconfiguration. Network Working Group. doi:10.17487/RFC4862. RFC 4862. Draft Standard. Obsoletes RFC 2462. Updated by RFC 7527.
M. Crawford (August 2000). Router Renumbering for IPv6. Network Working Group. doi:10.17487/RFC2894. RFC 2894. Proposed Standard.
F. Gont; S. Krishnan; T. Narten; R. Draves (February 2021). Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6. Internet Engineering Task Force. doi:10.17487/RFC8981. ISSN 2070-1721. RFC 8981. Proposed Standard. Obsoletes RFC 4941.
Cooper, Alissa; Gont, Fernando; Thaler, Dave. Recommendation on Stable IPv6 Interface Identifiers. IETF. doi:10.17487/RFC8064. RFC 8064.
E. Jankiewicz; J. Loughney; T. Narten (December 2011). IPv6 Node Requirements. Internet Engineering Task Force. doi:10.17487/RFC6434. ISSN 2070-1721. RFC 6434. Obsolete. p. 17. Obsoleted by RFC 8504. Obsoletes RFC 4294. Previously, IPv6 mandated implementation of IPsec and recommended the key management approach of IKE. This document updates that recommendation by making support of the IPsec Architecture RFC4301 a SHOULD for all IPv6 nodes.
V. Devarapalli; R. Wakikawa; A. Petrescu; P. Thubert (January 2005). Network Mobility (NEMO) Basic Support Protocol. Network Working Group. doi:10.17487/RFC3963. RFC 3963. Proposed Standard.
D. Borman; S. Deering; R. Hinden (August 1999). IPv6 Jumbograms. Network Working Group. doi:10.17487/RFC2675. RFC 2675. Proposed Standard. Obsoletes RFC 2147.
K. Nichols; S. Blake; F. Baker; D. Black (December 1998). Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. Network Working Group. doi:10.17487/RFC2474. RFC 2474. Proposed Standard. Obsoletes RFC 1455 and 1349. Updated by RFC 3168, 3260 and 8436.
K. Ramakrishnan; S. Floyd; D. Black (September 2001). The Addition of Explicit Congestion Notification (ECN) to IP. Network Working Group. doi:10.17487/RFC3168. RFC 3168. Proposed Standard. Obsoletes RFC 2481. Updates RFC 2474, 2401 and 793. Updated by RFC 4301, 6040 and 8311.
Network Reconnaissance in IPv6 Networks. IETF. doi:10.17487/RFC7707. RFC 7707.
S. Kawamura; M. Kawashima (August 2010). A Recommendation for IPv6 Address Text Representation. Internet Engineering Task Force. doi:10.17487/RFC5952. ISSN 2070-1721. RFC 5952. Proposed Standard. Updates RFC 4291.
M. Blanchet (April 2008). Special-Use IPv6 Addresses. Network Working Group. doi:10.17487/RFC5156. RFC 5156. Proposed Standard. Obsoleted by RFC 6890.
T. Berners-Lee; R. Fielding; L. Masinter (January 2005). Uniform Resource Identifier (URI): Generic Syntax. Network Working Group. doi:10.17487/RFC3986. STD 66. RFC 3986. Internet Standard 66. Obsoletes RFC 2732, 2396 and 1808. Updated by RFC 6874, 7320 and 8820. Updates RFC 1738.
IAB; IESG (September 2001). IAB/IESG Recommendations on IPv6 Address Allocations to Sites. Network Working Group. doi:10.17487/RFC3177. RFC 3177. Obsolete. Obsoleted by RFC 6177.
T. Narten; G. Huston; L. Roberts (March 2011). IPv6 Address Assignment to End Sites. Internet Engineering Task Force. doi:10.17487/RFC6177. ISSN 2070-1721. BCP 157. RFC 6177. Best Current Practice 157. Obsoletes RFC 3177.
S. Thomson; C. Huitema; V. Ksinant; M. Souissi (October 2003). DNS Extensions to Support IP Version 6. Network Working Group. doi:10.17487/RFC3596. STD 88. RFC 3596. Internet Standard 88. Obsoletes RFC 3152 and 1886.
D. Thaler; R. Draves; A. Matsumoto; T. Chown (September 2012). D. Thaler (ed.). Default Address Selection for Internet Protocol Version 6 (IPv6). Internet Engineering Task Force. doi:10.17487/RFC6724. ISSN 2070-1721. RFC 6724. Proposed Standard. Obsoletes RFC 3484.
M. Crawford; C. Huitema (July 2000). DNS Extensions to Support IPv6 Address Aggregation and Renumbering. Network Working Group. doi:10.17487/RFC2874. RFC 2874. Historic. Updated by RFC 3152, 3226, 3363 and 3364. Updates RFC 1886.
R. Austein (August 2002). Tradeoffs in Domain Name System (DNS) Support for Internet Protocol version 6 (IPv6). Network Working Group. doi:10.17487/RFC3364. RFC 3364. Informational. Updates RFC 2673 and 2874.
R. Bush; A. Durand; B. Fink; O. Gudmundsson; T. Hain, eds. (August 2002). Representing Internet Protocol version 6 (IPv6) Addresses in the Domain Name System (DNS). Network Working Group. doi:10.17487/RFC3363. RFC 3363. Informational. Updates RFC 2673 and 2874.
E. Nordmark; R. Gilligan (October 2005). Basic Transition Mechanisms for IPv6 Hosts and Routers. Network Working Group. doi:10.17487/RFC4213. RFC 4213. Proposed Standard. Obsoletes RFC 2893.
M. Cotton; L. Vegoda; B. Haberman (April 2013). R. Bonica (ed.). Special-Purpose IP Address Registries. Internet Engineering Task Force. doi:10.17487/RFC6890. ISSN 2070-1721. BCP 153. RFC 6890. Best Current Practice 153. Obsoletes RFC 4773, 5156, 5735 and 5736. Updated by RFC 8190.
R. Gilligan; S. Thomson; J. Bound; J. McCann; W. Stevens (February 2003). Basic Socket Interface Extensions for IPv6. Network Working Group. doi:10.17487/RFC3493. RFC 3493.
C. Bao; C. Huitema; M. Bagnulo; M. Boucadair; X. Li (October 2010). IPv6 Addressing of IPv4/IPv6 Translators. Internet Engineering Task Force. doi:10.17487/RFC6052. ISSN 2070-1721. RFC 6052. Proposed Standard. Updates RFC 4291.
F. Gont; V. Manral; R. Bonica (January 2014). Implications of Oversized IPv6 Header Chains. Internet Engineering Task Force. doi:10.17487/RFC7112. ISSN 2070-1721. RFC 7112. Proposed Standard. Updates RFC 2460.
F. Gont (February 2014). Implementation Advice for IPv6 Router Advertisement Guard (RA-Guard). Internet Engineering Task Force. doi:10.17487/RFC7113. ISSN 2070-1721. RFC 7113. Informational. Updates RFC 6105.
F. Gont (August 2013). Security Implications of IPv6 Fragmentation with IPv6 Neighbor Discovery. Internet Engineering Task Force. doi:10.17487/RFC6980. ISSN 2070-1721. RFC 6980. Proposed Standard. Updates RFC 3971 and 4861.

ripe.net (Global: low place; English: low place)

"The RIPE NCC has run out of IPv4 Addresses" (Press release). RIPE NCC. 25 November 2019. Archived from the original on 19 January 2024. Retrieved 26 November 2019.
"IPv6 Address Allocation and Assignment Policy". RIPE NCC. 8 February 2011. Archived from the original on 3 June 2023. Retrieved 27 March 2011.

sixxs.net (Global: low place; English: low place)

"IPv6 Transition Mechanism/Tunneling Comparison". Sixxs.net. Archived from the original on 23 October 2023. Retrieved 20 January 2012.

web.archive.org (Global: 1^st place; English: 1^st place)

"FAQs". New Zealand IPv6 Task Force. Archived from the original on 29 January 2019. Retrieved 26 October 2015.
Siddiqui, Aftab (17 July 2017). "RFC 8200 – IPv6 Has Been Standardized". Internet Society. Archived from the original on 23 October 2023. Retrieved 25 February 2018.
"Free Pool of IPv4 Address Space Depleted". NRO.net. Montevideo: The Number Resource Organization. 3 February 2011. Archived from the original on 18 January 2024. Retrieved 19 January 2022.
Ward, Mark (14 September 2012). "Europe hits old internet address limits". BBC News. Archived from the original on 5 November 2023. Retrieved 15 September 2012.
Huston, Geoff. "IPV4 Address Report". Archived from the original on 10 January 2024.
"The RIPE NCC has run out of IPv4 Addresses" (Press release). RIPE NCC. 25 November 2019. Archived from the original on 19 January 2024. Retrieved 26 November 2019.
Ferguson, P.; Berkowitz, H. (January 1997). "Network Renumbering Overview: Why would I want it and what is it anyway?". IETF. doi:10.17487/RFC2071. RFC 2071. Archived from the original on 7 January 2024. Retrieved 10 June 2026.
Berkowitz, H. (January 1997). "Router Renumbering Guide". IETF. doi:10.17487/RFC2072. RFC 2072. Archived from the original on 8 June 2023. Retrieved 10 June 2026.
Gont, F. (March 2016). "Operational Implications of IPv6 Packets with Extension Headers". IETF. Archived from the original on 27 October 2023.
Narten, T. (September 2007). "Neighbor Discovery for IP version 6 (IPv6)". IETF. section 6.3.7. doi:10.17487/RFC4861. RFC 4861. Archived from the original on 17 January 2024. Retrieved 10 June 2026.
Thomson, S. (September 2007). "IPv6 Stateless Address Autoconfiguration - Section 5.5.1". IETF. doi:10.17487/RFC4862. RFC 4862. Archived from the original on 11 January 2024. Retrieved 10 June 2026.
"IPv6 Address Allocation and Assignment Policy". RIPE NCC. 8 February 2011. Archived from the original on 3 June 2023. Retrieved 27 March 2011.
Brzozowski, John (31 January 2011). "Comcast Activates First Users With IPv6 Native Dual Stack Over DOCSIS" (Press release). Comcast. Archived from the original on 23 October 2023. Retrieved 15 April 2019.
"IPv6 Transition Mechanism/Tunneling Comparison". Sixxs.net. Archived from the original on 23 October 2023. Retrieved 20 January 2012.
Carpenter, B. (August 2011). "Advisory Guidelines for 6to4 Deployment". IETF. doi:10.17487/RFC6343. RFC 6343. Archived from the original on 28 January 2023. Retrieved 20 August 2012.
"IPv6: Dual stack where you can; tunnel where you must". networkworld.com. 5 September 2007. Archived from the original on 20 January 2024. Retrieved 27 November 2012.
"IPv6". NRO.net. Archived from the original on 12 January 2017. Retrieved 13 March 2017.
Pujol, Enric (12 June 2017). "What Stops IPv6 Traffic in a Dual-Stack ISP?". APNIC.net. APNIC. Archived from the original on 27 March 2023. Retrieved 13 June 2017.
Vaughan-Nichols, Steven J. (14 October 2010). "Five ways for IPv6 and IPv4 to peacefully co-exist". ZDNET. Archived from the original on 5 December 2023. Retrieved 13 March 2017.
Mullins, Robert (5 April 2012), "Shadow Networks: an Unintended IPv6 Side Effect", Network Computing, archived from the original on 11 April 2013, retrieved 2 March 2013
"History of the IPng Effort". The Sun. Archived from the original on 23 May 2014.
"Beijing2008.cn leaps to next-generation Net" (Press release). The Beijing Organizing Committee for the Games of the XXIX Olympiad. 30 May 2008. Archived from the original on 4 February 2009.
Das, Kaushik (2008). "IPv6 and the 2008 Beijing Olympics". IPv6.com. Archived from the original on 1 August 2008. Retrieved 15 August 2008.
"State of the Internet / IPv6 Adoption Visualization". Akamai. Archived from the original on 11 November 2020. Retrieved 15 December 2025.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Rosen, Rami (2014). Linux Kernel Networking: Implementation and Theory. New York: Apress. ISBN 9781430261971. OCLC 869747983.
F. Gont; S. Krishnan; T. Narten; R. Draves (February 2021). Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6. Internet Engineering Task Force. doi:10.17487/RFC8981. ISSN 2070-1721. RFC 8981. Proposed Standard. Obsoletes RFC 4941.
E. Jankiewicz; J. Loughney; T. Narten (December 2011). IPv6 Node Requirements. Internet Engineering Task Force. doi:10.17487/RFC6434. ISSN 2070-1721. RFC 6434. Obsolete. p. 17. Obsoleted by RFC 8504. Obsoletes RFC 4294. Previously, IPv6 mandated implementation of IPsec and recommended the key management approach of IKE. This document updates that recommendation by making support of the IPsec Architecture RFC4301 a SHOULD for all IPv6 nodes.
Silvia Hagen (2014). IPv6 Essentials: Integrating IPv6 into Your IPv4 Network (3rd ed.). Sebastopol, CA: O'Reilly Media. p. 196. ISBN 978-1-4493-3526-7. OCLC 881832733.
S. Kawamura; M. Kawashima (August 2010). A Recommendation for IPv6 Address Text Representation. Internet Engineering Task Force. doi:10.17487/RFC5952. ISSN 2070-1721. RFC 5952. Proposed Standard. Updates RFC 4291.
T. Narten; G. Huston; L. Roberts (March 2011). IPv6 Address Assignment to End Sites. Internet Engineering Task Force. doi:10.17487/RFC6177. ISSN 2070-1721. BCP 157. RFC 6177. Best Current Practice 157. Obsoletes RFC 3177.
D. Thaler; R. Draves; A. Matsumoto; T. Chown (September 2012). D. Thaler (ed.). Default Address Selection for Internet Protocol Version 6 (IPv6). Internet Engineering Task Force. doi:10.17487/RFC6724. ISSN 2070-1721. RFC 6724. Proposed Standard. Obsoletes RFC 3484.
M. Cotton; L. Vegoda; B. Haberman (April 2013). R. Bonica (ed.). Special-Purpose IP Address Registries. Internet Engineering Task Force. doi:10.17487/RFC6890. ISSN 2070-1721. BCP 153. RFC 6890. Best Current Practice 153. Obsoletes RFC 4773, 5156, 5735 and 5736. Updated by RFC 8190.
C. Bao; C. Huitema; M. Bagnulo; M. Boucadair; X. Li (October 2010). IPv6 Addressing of IPv4/IPv6 Translators. Internet Engineering Task Force. doi:10.17487/RFC6052. ISSN 2070-1721. RFC 6052. Proposed Standard. Updates RFC 4291.
F. Gont; V. Manral; R. Bonica (January 2014). Implications of Oversized IPv6 Header Chains. Internet Engineering Task Force. doi:10.17487/RFC7112. ISSN 2070-1721. RFC 7112. Proposed Standard. Updates RFC 2460.
F. Gont (February 2014). Implementation Advice for IPv6 Router Advertisement Guard (RA-Guard). Internet Engineering Task Force. doi:10.17487/RFC7113. ISSN 2070-1721. RFC 7113. Informational. Updates RFC 6105.
F. Gont (August 2013). Security Implications of IPv6 Fragmentation with IPv6 Neighbor Discovery. Internet Engineering Task Force. doi:10.17487/RFC6980. ISSN 2070-1721. RFC 6980. Proposed Standard. Updates RFC 3971 and 4861.

youtube.com (Global: 13^th place; English: 14^th place)

Google IPv6 Conference 2008: What will the IPv6 Internet look like?. Event occurs at 13:35. Archived from the original on 11 December 2021. Retrieved 10 June 2026.

zdnet.com (Global: 1,235^th place; English: 855^th place)

Vaughan-Nichols, Steven J. (14 October 2010). "Five ways for IPv6 and IPv4 to peacefully co-exist". ZDNET. Archived from the original on 5 December 2023. Retrieved 13 March 2017.

IPv6 (English Wikipedia)

adsabs.harvard.edu (Global: 14th place; English: 9th place)

ui.adsabs.harvard.edu

afrinic.net (Global: low place; English: low place)

akamai.com (Global: low place; English: low place)

apnic.net (Global: low place; English: low place)

stats.labs.apnic.net

blog.apnic.net

arin.net (Global: low place; English: low place)

bbc.co.uk (Global: 11th place; English: 10th place)

beijing2008.cn (Global: 4,933rd place; English: 3,798th place)

en.beijing2008.cn

bgp.tools (Global: low place; English: low place)

books.google.com (Global: 3rd place; English: 3rd place)

circleid.com (Global: low place; English: low place)

comcast.com (Global: low place; English: low place)

corporate.comcast.com

doi.org (Global: 2nd place; English: 2nd place)

eweek.com (Global: 8,041st place; English: 5,594th place)

ghostarchive.org (Global: 64th place; English: 28th place)

google.com (Global: 109th place; English: 87th place)

ietf.org (Global: 731st place; English: 625th place)

datatracker.ietf.org

tools.ietf.org

internetsociety.org (Global: low place; English: low place)

ipv6.com (Global: low place; English: low place)

ipv6.org.nz (Global: low place; English: low place)

ipv6forum.com (Global: low place; English: low place)

ipv6hackers.org (Global: low place; English: low place)

juniper.net (Global: low place; English: low place)

kiemtraip.vn (Global: low place; English: low place)

networkcomputing.com (Global: low place; English: low place)

networkworld.com (Global: 5,743rd place; English: 3,776th place)

nro.net (Global: low place; English: low place)

openbsd.org (Global: low place; English: 9,957th place)

man.openbsd.org

potaroo.net (Global: low place; English: low place)

rfc-editor.org (Global: 747th place; English: 325th place)

ripe.net (Global: low place; English: low place)

sixxs.net (Global: low place; English: low place)

web.archive.org (Global: 1st place; English: 1st place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

youtube.com (Global: 13th place; English: 14th place)

zdnet.com (Global: 1,235th place; English: 855th place)

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

bbc.co.uk (Global: 11^th place; English: 10^th place)

beijing2008.cn (Global: 4,933^rd place; English: 3,798^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

doi.org (Global: 2^nd place; English: 2^nd place)

eweek.com (Global: 8,041^st place; English: 5,594^th place)

ghostarchive.org (Global: 64^th place; English: 28^th place)

google.com (Global: 109^th place; English: 87^th place)

ietf.org (Global: 731^st place; English: 625^th place)

networkworld.com (Global: 5,743^rd place; English: 3,776^th place)

openbsd.org (Global: low place; English: 9,957^th place)

rfc-editor.org (Global: 747^th place; English: 325^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)

youtube.com (Global: 13^th place; English: 14^th place)

zdnet.com (Global: 1,235^th place; English: 855^th place)