List of Illinois area codes (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "List of Illinois area codes" in English language version.

refsWebsite

Global rank English rank

1nationalnanpa.com

2,470^th place

1,321^st place

low place

low place

nationalnanpa.com

https://nationalnanpa.com/reports/October%202021%20NPA%20Exhaust%20Analysis.pdf ^{[bare URL PDF]}

week.com

"New 861 area code coming to 309 region, assigned to new numbers 2022-2023".