Prefix overview
Phone numbers in prefix 256-403
This page covers the 256-403 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
256-403
RATE CENTER
ANNISTON
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - AL
AL
Prefix range
The prefix 256-403 includes numbers from 2564030000 to 2564039999.
This range is associated with the ANNISTON rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - AL.
Numbers in this prefix
20 numbers