Prefix overview
Phone numbers in prefix 551-231
This page covers the 551-231 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
551-231
RATE CENTER
OAKLAND
CARRIER
BANDWIDTH.COM CLEC, LLC - NJ
NJ
Prefix range
The prefix 551-231 includes numbers from 5512310000 to 5512319999.
This range is associated with the OAKLAND rate center and was originally assigned to BANDWIDTH.COM CLEC, LLC - NJ.
Numbers in this prefix
20 numbers