Prefix overview
Phone numbers in prefix 510-231
This page covers the 510-231 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
510-231
RATE CENTER
RICHMOND
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 510-231 includes numbers from 5102310000 to 5102319999.
This range is associated with the RICHMOND rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers