Telephone Area 312. .
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.
Phone numbers +1-312-YYY-YYYY
Company | District | Major City | Prefix |
---|---|---|---|
Ameritech Illinois | Cook | Chicago, IL | +1-312201-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312202-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312203-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312204-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312205-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312206-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312207-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312208-SSSS |
Cellco Partnership DBA Verizon Wireless | Cook | Northbrook, IL | +1-312209-SSSS |
Cook | Chicago, IL | +1-312210-SSSS | |
Ameritech Illinois | Cook | Chicago, IL | +1-312212-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312213-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312214-SSSS |
New Cingular Wireless PCS | Cook | Wheeling, IL | +1-312215-SSSS |
Cook | +1-312216-SSSS | ||
United States Cellular Corp. - Illinois | Cook | Chicago, IL | +1-312217-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312218-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312220-SSSS |
Sprint Spectrum L.p. | Cook | +1-312221-SSSS | |
Ameritech Illinois | Cook | Chicago, IL | +1-312222-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312223-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312224-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312225-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312226-SSSS |
Ameritech Illinois | Chicago, IL | +1-312227-SSSS | |
Ameritech Illinois | Cook | Chicago, IL | +1-312228-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312229-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312230-SSSS |
New Cingular Wireless PCS | Du Page | Roselle, IL | +1-312231-SSSS |
American Messaging (am) | Cook | Chicago, IL | +1-312232-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312233-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312234-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312235-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312236-SSSS |
Cellco Partnership DBA Verizon Wireless | Cook | Chicago, IL | +1-312237-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312238-SSSS |
AT&T Local | Cook | Chicago, IL | +1-312239-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312240-SSSS |
Cook | +1-312241-SSSS | ||
Teleport Communications Group - Chicago | Cook | Chicago, IL | +1-312242-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312243-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312244-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312245-SSSS |
New Cingular Wireless PCS | Cook | Wheeling, IL | +1-312246-SSSS |
Globalcom-il | Cook | Chicago, IL | +1-312247-SSSS |
Usa Mobility Wireless | Cook | Chicago, IL | +1-312249-SSSS |
Usa Mobility Wireless | Cook | Chicago, IL | +1-312250-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312251-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312252-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312253-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312254-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312255-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312256-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312258-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312259-SSSS |
Mcimetro Access Transmission Services LLC | Cook | Chicago, IL | +1-312260-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312261-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312262-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312263-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312264-SSSS |
Access One | Cook | Chicago, IL | +1-312265-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312266-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312267-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312268-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312269-SSSS |
Usa Mobility Wireless | Cook | Chicago, IL | +1-312271-SSSS |
Usa Mobility Wireless | Cook | Chicago, IL | +1-312272-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312274-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312275-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312276-SSSS |
Allegiance Telecom | Cook | Chicago, IL | +1-312277-SSSS |
Broadwing Communications | Cook | Chicago, IL | +1-312278-SSSS |
Mcimetro Access Transmission Services LLC | Cook | Chicago, IL | +1-312279-SSSS |
Ameritech Illinois | Cook | Chicago, IL | +1-312280-SSSS |
Global Crossing Local Services-il | Cook | Chicago, IL | +1-312281-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312282-SSSS |
Global Crossing Local Services-il | Cook | Chicago, IL | +1-312283-SSSS |
Xo Illinois | Cook | Chicago, IL | +1-312284-SSSS |
Sprint Spectrum L.p. | Cook | Chicago, IL | +1-312285-SSSS |
New Cingular Wireless PCS | Cook | Chicago, IL | +1-312286-SSSS |