NPA-NXX - 510-657

This is the 510-657 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

The 510-657 subcode mainly covers Fremont-newark in Alameda county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of California state. Many of the numbers in this subcode are Regular Landline registered to At&t California. We hear they employ a large number of people in the California office.
Recently there have been an increase in reported calls, we've had over 1510271 comments across our systems for the 510-657 subcode.

Looking for a different number? Follow a link below to see our recently active.

904-679-8901 407-690-9037 435-654-2193 914-482-3888 310-341-4498
603-374-6724 770-773-9381 520-229-2212 213-455-9183 862-209-3165