USA Phone Code Guide
USA Phone
Code Guide

Telephone Area +1 (312) XXX-XXXX

Phone numbers of the state Illinois
Prefix: +1312
This prefix is distributed within the state Illinois
The largest city in the region is Chicago
Time Zone: Central
Winter time: UTC-6
Summer time: UTC-5
Below on the map, there is indicated the largest city in the telephone area +1-312-...-.... Illinois Chicago.

In the United States, telephone numbers are divided into a country code (+1), an area code (or prefix), which is three digits long, and a subscriber number (seven digits). These are just a few examples, and there are over 300 area codes in the United States. Each code can cover both large cities and less populated areas depending on population density and telephone network distribution.



Phone numbers +1 (312) XXX-XXXX

Other pages: 23456789
Company District Major City Prefix
Ameritech IllinoisCookChicago, IL+1 (312) 201-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 202-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 203-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 204-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 205-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 206-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 207-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 208-XXXX
Cellco Partnership DBA Verizon WirelessCookNorthbrook, IL+1 (312) 209-XXXX
CookChicago, IL+1 (312) 210-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 212-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 213-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 214-XXXX
New Cingular Wireless PCSCookWheeling, IL+1 (312) 215-XXXX
Cook+1 (312) 216-XXXX
United States Cellular Corp. - IllinoisCookChicago, IL+1 (312) 217-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 218-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 220-XXXX
Sprint Spectrum L.p.Cook+1 (312) 221-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 222-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 223-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 224-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 225-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 226-XXXX
Ameritech IllinoisChicago, IL+1 (312) 227-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 228-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 229-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 230-XXXX
New Cingular Wireless PCSDu PageRoselle, IL+1 (312) 231-XXXX
American Messaging (am)CookChicago, IL+1 (312) 232-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 233-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 234-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 235-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 236-XXXX
Cellco Partnership DBA Verizon WirelessCookChicago, IL+1 (312) 237-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 238-XXXX
AT&T LocalCookChicago, IL+1 (312) 239-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 240-XXXX
Cook+1 (312) 241-XXXX
Teleport Communications Group - ChicagoCookChicago, IL+1 (312) 242-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 243-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 244-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 245-XXXX
New Cingular Wireless PCSCookWheeling, IL+1 (312) 246-XXXX
Globalcom-ilCookChicago, IL+1 (312) 247-XXXX
Usa Mobility WirelessCookChicago, IL+1 (312) 249-XXXX
Usa Mobility WirelessCookChicago, IL+1 (312) 250-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 251-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 252-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 253-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 254-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 255-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 256-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 258-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 259-XXXX
Mcimetro Access Transmission Services LLCCookChicago, IL+1 (312) 260-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 261-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 262-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 263-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 264-XXXX
Access OneCookChicago, IL+1 (312) 265-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 266-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 267-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 268-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 269-XXXX
Usa Mobility WirelessCookChicago, IL+1 (312) 271-XXXX
Usa Mobility WirelessCookChicago, IL+1 (312) 272-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 274-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 275-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 276-XXXX
Allegiance TelecomCookChicago, IL+1 (312) 277-XXXX
Broadwing CommunicationsCookChicago, IL+1 (312) 278-XXXX
Mcimetro Access Transmission Services LLCCookChicago, IL+1 (312) 279-XXXX
Ameritech IllinoisCookChicago, IL+1 (312) 280-XXXX
Global Crossing Local Services-ilCookChicago, IL+1 (312) 281-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 282-XXXX
Global Crossing Local Services-ilCookChicago, IL+1 (312) 283-XXXX
Xo IllinoisCookChicago, IL+1 (312) 284-XXXX
Sprint Spectrum L.p.CookChicago, IL+1 (312) 285-XXXX
New Cingular Wireless PCSCookChicago, IL+1 (312) 286-XXXX