Prefix overview
Phone numbers in prefix 503-377
This page covers the 503-377 prefix in the United States. It shows where numbers come from, which carrier is linked to the range, and how this block is structured.
If you are looking for a specific number, you can continue to its dedicated phone page. Otherwise, this page helps you understand the broader number block behind it.
PREFIX
503-377
RATE CENTER
BAY CITY
CARRIER
UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR
OR
Prefix range
The prefix 503-377 includes numbers from 5033770000 to 5033779999.
This range is associated with the BAY CITY rate center and was originally assigned to UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR.
Numbers in this prefix
20 numbers