Prefix overview
Phone numbers in prefix 310-251
This page covers the 310-251 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
310-251
RATE CENTER
CMTN GRDN
CARRIER
NEW CINGULAR WIRELESS PCS, LLC
CA
Prefix range
The prefix 310-251 includes numbers from 3102510000 to 3102519999.
This range is associated with the CMTN GRDN rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC.
Numbers in this prefix
20 numbers