Prefix overview
Phone numbers in prefix 501-421
This page covers the 501-421 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
501-421
RATE CENTER
LITTLEROCK
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - AR
AR
Prefix range
The prefix 501-421 includes numbers from 5014210000 to 5014219999.
This range is associated with the LITTLEROCK rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - AR.
Numbers in this prefix
20 numbers