Prefix overview
Phone numbers in prefix 310-309
This page covers the 310-309 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
310-309
RATE CENTER
SNMN SNMN
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - CA
CA
Prefix range
The prefix 310-309 includes numbers from 3103090000 to 3103099999.
This range is associated with the SNMN SNMN rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - CA.
Numbers in this prefix
20 numbers