Prefix overview
Phone numbers in prefix 956-440
This page covers the 956-440 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
956-440
RATE CENTER
HARLINGEN
CARRIER
SOUTHWESTERN BELL
TX
Prefix range
The prefix 956-440 includes numbers from 9564400000 to 9564409999.
This range is associated with the HARLINGEN rate center and was originally assigned to SOUTHWESTERN BELL.
Numbers in this prefix
20 numbers