HTTP 451 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "HTTP 451" in English language version.

refsWebsite

Global rank English rank

2theguardian.com

12^th place

11^th place

2ietf.org

214^th place

176^th place

2doi.org

2^nd place

1attorneygeneral.gov

low place

1sophos.com

low place

8,773^rd place

1wired.co.uk

2,053^rd place

1,340^th place

1niemanlab.org

low place

6,277^th place

1engadget.com

466^th place

349^th place

1openrightsgroup.org

low place

1web.archive.org

1^st place

1qwghlm.co.uk

low place

1vice.com

175^th place

137^th place

1mnot.net

low place

1bbc.co.uk

8^th place

10^th place

1rfc-editor.org

6,184^th place

4,465^th place

attorneygeneral.gov

"Attorney General Shapiro, Governor Wolf, State Police Successfully Block Access to 3D Downloadable Guns in Pennsylvania" (Press release). Pennsylvania Office of Attorney General. 29 July 2018.

bbc.co.uk

Sally Hayden (28 September 2017). From Our Own Correspondent (radio). BBC Radio 4.

doi.org

Bray, Tim (February 2016). "451 Unavailable For Legal Reasons". An HTTP Status Code to Report Legal Obstacles. sec. 3. doi:10.17487/RFC7725. RFC 7725.
Bray, Tim (February 2016). "Identifying Blocking Entities". An HTTP Status Code to Report Legal Obstacles. sec. 4. doi:10.17487/RFC7725. RFC 7725.

engadget.com

"Major US news sites are still blocking Europeans due to GDPR". Engadget. Retrieved 27 July 2023.

ietf.org

datatracker.ietf.org

Bray, Tim (February 2016). "451 Unavailable For Legal Reasons". An HTTP Status Code to Report Legal Obstacles. sec. 3. doi:10.17487/RFC7725. RFC 7725.
Bray, Tim (February 2016). "Identifying Blocking Entities". An HTTP Status Code to Report Legal Obstacles. sec. 4. doi:10.17487/RFC7725. RFC 7725.

mnot.net

Nottingham, Mark (18 December 2015). "Why 451?". mnot’s blog. Retrieved 20 December 2015.

niemanlab.org

"More than 1,000 U.S. News sites are still unavailable in Europe, two months after GDPR took effect". www.niemanlab.org.

openrightsgroup.org

wiki.openrightsgroup.org

"Cleanfeed". ORG Wiki. Open Rights Group. If the request is for the blocked content then the proxy server will return a 404 error page to the customer

qwghlm.co.uk

Applegate, Chris (9 December 2008). "There is no HTTP code for censorship". qwghlm.co.uk. Archived from the original on 19 April 2021. Retrieved 23 December 2015.

rfc-editor.org

Stéphane Bortzmeyer (11 November 2017). "RFC Errata Report". IETF Tools. Retrieved 3 December 2018.

sophos.com

nakedsecurity.sophos.com

Ducklin, Paul (19 August 2013). "HTTP error code 451: "Unavailable For Legal Reasons"". Naked Security. Sophos.

theguardian.com

Flood, Alison (22 June 2012). "Call for Ray Bradbury to be honoured with internet error message". The Guardian. Retrieved 22 June 2012.
Arthur, Charles (8 December 2008). "How the IWF blacklist stops you seeing the Scorpions' album cover". Technology blog, The Guardian. TCP Reset is sent back to the customer instead of content.

vice.com

Byrne, Michael (21 December 2015). "The HTTP 451 Error Code for Censorship Is Now an Internet Standard". Vice. Retrieved 3 July 2020.

web.archive.org

Applegate, Chris (9 December 2008). "There is no HTTP code for censorship". qwghlm.co.uk. Archived from the original on 19 April 2021. Retrieved 23 December 2015.

wired.co.uk

Matt Burgess (29 August 2018). "The tyranny of GDPR popups and the websites failing to adapt". WIRED. Retrieved 1 October 2018.