Phone prefix +1-231920
Phone prefix: +1231920
This prefix is distributed within the state Michigan
The largest city within this prefix is Traverse City, MI
District: Grand Traverse
The largest organization: New Cingular Wireless PCS - IL
Time Zone: Eastern
Winter time: UTC-5
Summer time: UTC-4
The largest city within the prefix of +1-231920.... numbers is shown below
Traverse City, MI.