NPA-NXX - 510-623
This is the 510-623 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 510-623 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 510-623 subcode.
Looking for a different number? Follow a link below to see our recently active.
702-714-9074 765-681-9849 573-681-5695 717-343-7031 805-904-9467512-355-2020 978-552-3372 504-603-7937 501-416-3397 217-721-7210