Prefix overview
Phone numbers in prefix 661-358
This page covers the 661-358 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
661-358
RATE CENTER
TAFT
CARRIER
UTILITY TELECOM GROUP, LLC - CA
CA
Prefix range
The prefix 661-358 includes numbers from 6613580000 to 6613589999.
This range is associated with the TAFT rate center and was originally assigned to UTILITY TELECOM GROUP, LLC - CA.
Numbers in this prefix
20 numbers