Prefix overview
Phone numbers in prefix 872-331
This page covers the 872-331 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
872-331
RATE CENTER
CHICGOZN02
CARRIER
CALLWORKS CORPORATION
IL
Prefix range
The prefix 872-331 includes numbers from 8723310000 to 8723319999.
This range is associated with the CHICGOZN02 rate center and was originally assigned to CALLWORKS CORPORATION.
Numbers in this prefix
20 numbers