Prefix overview
Phone numbers in prefix 310-321
This page covers the 310-321 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
310-321
RATE CENTER
EL SEGUNDO
CARRIER
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS
CA
Prefix range
The prefix 310-321 includes numbers from 3103210000 to 3103219999.
This range is associated with the EL SEGUNDO rate center and was originally assigned to U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS.
Numbers in this prefix
20 numbers