Phone prefix +1 (312) 565-XXXX

Phone prefix: +1312565

This prefix is distributed within the state Illinois

The largest city within this prefix is Chicago, IL

District: Cook

The largest organization: Ameritech Illinois

Time Zone: Central

Winter time: UTC-6

Summer time: UTC-5

If you did not find the required prefix in the table, you can use the search by full phone number according to the recommendations on the corresponding page.