NPA-NXX - 401-478

This is the 401-478 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. 401
3. 401-478

The 401-478 subcode mainly covers Providence in Providence county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Rhode Island state. Many of the numbers in this subcode are Mixed registered to Verizon Communications. We hear they employ a large number of people in the Rhode Island office.
Recently there have been an increase in reported calls, we've had over 626667 comments across our systems for the 401-478 subcode.