North American Telephone Operator
North American
Telephone Operator

Phone prefix +1-510256

Phone prefix: +1510256
This prefix is distributed within the state California
The largest city within this prefix is Walnut Creek, CA
District: Contra Costa
The largest organization: O1 Communications
Phone numbers of the state California
Time Zone: Pacific
Winter time: UTC-8
Summer time: UTC-7
The largest city within the prefix of +1-510256.... numbers is shown below Walnut Creek, CA.