Prefix overview
Phone numbers in prefix 510-266
This page covers the 510-266 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
510-266
RATE CENTER
HAYWARD
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 510-266 includes numbers from 5102660000 to 5102669999.
This range is associated with the HAYWARD rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers