NPA-NXX - 518-638

This is the 518-638 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. 518
3. 518-638

The 518-638 subcode mainly covers Argyle in Washington county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of New York state. Many of the numbers in this subcode are Regular Landline registered to Verizon Communications. We hear they employ a large number of people in the New York office.
Recently there have been an increase in reported calls, we've had over 63216 comments across our systems for the 518-638 subcode.