Prefix overview
Phone numbers in prefix 303-243
This page covers the 303-243 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
303-243
RATE CENTER
DENVER
CARRIER
N.E. COLORADO CELLULAR, INC.
CO
Prefix range
The prefix 303-243 includes numbers from 3032430000 to 3032439999.
This range is associated with the DENVER rate center and was originally assigned to N.E. COLORADO CELLULAR, INC..
Numbers in this prefix
20 numbers