USA Phone Code Guide
USA Phone
Code Guide

Phone prefix +1 (815) 315-XXXX

Phone prefix: +1815315
This prefix is distributed within the state Illinois
The largest city within this prefix is Rockford, IL
District: Winnebago
The largest organization: Level 3 Communications
Phone numbers of the state Illinois
Time Zone: Central
Winter time: UTC-6
Summer time: UTC-5
The largest city within the prefix of +1 (815) 315-XXXX numbers is shown below Rockford, IL.