Prefix overview
Phone numbers in prefix 661-256
This page covers the 661-256 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
661-256
RATE CENTER
ROSAMOND
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 661-256 includes numbers from 6612560000 to 6612569999.
This range is associated with the ROSAMOND rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers