NPA-NXX - 830-931

This is the 830-931 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. 830
3. 830-931

The 830-931 subcode mainly covers Castroville in Medina 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 Regular Landline registered to At&t Southwest. 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 46006 comments across our systems for the 830-931 subcode.