NPA-NXX - 606-503

This is the 606-503 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. 606
3. 606-503

The 606-503 subcode mainly covers Harlan in Harlan county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Kentucky state. Many of the numbers in this subcode are Regular Landline registered to Mikrotec Communications. We hear they employ a large number of people in the Kentucky office.
Recently there have been an increase in reported calls, we've had over 29278 comments across our systems for the 606-503 subcode.