NPA-NXX - 505-257

This is the 505-257 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. 505
3. 505-257

The 505-257 subcode mainly covers Los Alamos in Los Alamos county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of New Mexico state. Many of the numbers in this subcode are Regular Landline registered to Bandwidth.com. We hear they employ a large number of people in the New Mexico office.
Recently there have been an increase in reported calls, we've had over 17950 comments across our systems for the 505-257 subcode.