Prefix overview
Phone numbers in prefix 312-323
This page covers the 312-323 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
312-323
RATE CENTER
CHICGOZN01
CARRIER
AMERICAN MESSAGING SERVICES, LLC
IL
Prefix range
The prefix 312-323 includes numbers from 3123230000 to 3123239999.
This range is associated with the CHICGOZN01 rate center and was originally assigned to AMERICAN MESSAGING SERVICES, LLC.
Numbers in this prefix
20 numbers