Prefix overview
Phone numbers in prefix 503-328
This page covers the 503-328 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
503-328
RATE CENTER
GRESHAM
CARRIER
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM
OR
Prefix range
The prefix 503-328 includes numbers from 5033280000 to 5033289999.
This range is associated with the GRESHAM rate center and was originally assigned to ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM.
Numbers in this prefix
20 numbers