Prefix overview
Phone numbers in prefix 661-257
This page covers the 661-257 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
661-257
RATE CENTER
SNCA NHCS
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 661-257 includes numbers from 6612570000 to 6612579999.
This range is associated with the SNCA NHCS rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers