NPA-NXX - 620-639

This is the 620-639 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. 620
3. 620-639

The 620-639 subcode mainly covers Great Bend in Barton county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Kansas state. Many of the numbers in this subcode are Cellular (Dedicated) registered to Nex-tech Wireless. We hear they employ a large number of people in the Kansas office.
Recently there have been an increase in reported calls, we've had over 27674 comments across our systems for the 620-639 subcode.