Prefix overview
Phone numbers in prefix 310-343
This page covers the 310-343 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
310-343
RATE CENTER
EL SEGUNDO
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - CA
CA
Prefix range
The prefix 310-343 includes numbers from 3103430000 to 3103439999.
This range is associated with the EL SEGUNDO rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - CA.
Numbers in this prefix
20 numbers