NPA-NXX - 503-634

This is the 503-634 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. 503
3. 503-634

The 503-634 subcode mainly covers Monitor in Marion county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Oregon state. Many of the numbers in this subcode are Regular Landline registered to Monitor Cooperative Telephone Company. We hear they employ a large number of people in the Oregon office.
Recently there have been an increase in reported calls, we've had over 315335 comments across our systems for the 503-634 subcode.