Prefix overview
Phone numbers in prefix 331-284
This page covers the 331-284 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
331-284
RATE CENTER
BARTLETT
CARRIER
T-MOBILE USA, INC.
IL
Prefix range
The prefix 331-284 includes numbers from 3312840000 to 3312849999.
This range is associated with the BARTLETT rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers