NPA-NXX - 870-878

This is the 870-878 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. 870
3. 870-878

The 870-878 subcode mainly covers Black Rock in Lawrence county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Arkansas 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 Arkansas office.
Recently there have been an increase in reported calls, we've had over 17415 comments across our systems for the 870-878 subcode.