Prefix overview
Phone numbers in prefix 858-344
This page covers the 858-344 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
858-344
RATE CENTER
LA JOLLA
CARRIER
NEW CINGULAR WIRELESS PCS, LLC
CA
Prefix range
The prefix 858-344 includes numbers from 8583440000 to 8583449999.
This range is associated with the LA JOLLA rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC.
Numbers in this prefix
20 numbers