NPA-NXX - 520-383

This is the 520-383 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. 520
3. 520-383

The 520-383 subcode mainly covers Sells in Pima county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Arizona state. Many of the numbers in this subcode are Regular Landline registered to Tohono O'odham Utility Authority. We hear they employ a large number of people in the Arizona office.
Recently there have been an increase in reported calls, we've had over 980263 comments across our systems for the 520-383 subcode.