Prefix overview
Phone numbers in prefix 281-331
This page covers the 281-331 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
281-331
RATE CENTER
ALVIN
CARRIER
SOUTHWESTERN BELL
TX
Prefix range
The prefix 281-331 includes numbers from 2813310000 to 2813319999.
This range is associated with the ALVIN rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers