NPA-NXX - 817-721

This is the 817-721 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. 817
3. 817-721

The 817-721 subcode mainly covers Arlington in Tarrant county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Texas state. Many of the numbers in this subcode are Miscellaneous registered to Sprint. We hear they employ a large number of people in the Texas office.
Recently there have been an increase in reported calls, we've had over 1809034 comments across our systems for the 817-721 subcode.