Prefix overview
Phone numbers in prefix 641-243
This page covers the 641-243 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
641-243
RATE CENTER
MASON CITY
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - IA
IA
Prefix range
The prefix 641-243 includes numbers from 6412430000 to 6412439999.
This range is associated with the MASON CITY rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - IA.
Numbers in this prefix
20 numbers