Prefix overview
Phone numbers in prefix 956-377
This page covers the 956-377 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
956-377
RATE CENTER
DONNA
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - TX
TX
Prefix range
The prefix 956-377 includes numbers from 9563770000 to 9563779999.
This range is associated with the DONNA rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - TX.
Numbers in this prefix
20 numbers