Prefix overview
Phone numbers in prefix 312-239
This page covers the 312-239 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
312-239
RATE CENTER
CHICGOZN01
CARRIER
AT&T - LOCAL
IL
Prefix range
The prefix 312-239 includes numbers from 3122390000 to 3122399999.
This range is associated with the CHICGOZN01 rate center and was originally assigned to AT&T - LOCAL.
Numbers in this prefix
20 numbers