Area code 313 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Area code 313" in English language version.

refsWebsite

Global rank English rank

2,470^th place

1,321^st place

low place

1,052^nd place

594^th place

966^th place

561^st place

9^th place

13^th place

areacodehelp.com

"Planning Letter No. IL-92/11-022" (PDF). nationalnanpa.com. North American Numbering Plan. November 23, 1992.
"NANPA : North American Numbering Plan Administrator". nationalnanpa.com. Retrieved April 11, 2023.
"Planning Letter PL-209" (PDF). nationalnanpa.com. North American Numbering Plan. February 1, 2002.
"Planning Letter PL-227" (PDF). nationalnanpa.com. North American Numbering Plan. April 24, 2000.
"2021-2 NRUF and NPA Exhaust Analysis" (PDF). nationalnanpa.com. October 2021. Retrieved April 11, 2023.