NPA-NXX - 318-421

This is the 318-421 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 318
3. 318-421

The 318-421 subcode mainly covers Monterey in Concordia county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Louisiana state. Many of the numbers in this subcode are Cellular (Dedicated) registered to At&t Mobility. We hear they employ a large number of people in the Louisiana office.
Recently there have been an increase in reported calls, we've had over 20822 comments across our systems for the 318-421 subcode.