Prefix overview
Phone numbers in prefix 331-871
This page covers the 331-871 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
331-871
RATE CENTER
W CHICAGO
CARRIER
ONVOY, LLC
IL
Prefix range
The prefix 331-871 includes numbers from 3318710000 to 3318719999.
This range is associated with the W CHICAGO rate center and was originally assigned to ONVOY, LLC.
Numbers in this prefix
20 numbers