Prefix overview
Phone numbers in prefix 830-355
This page covers the 830-355 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
830-355
RATE CENTER
CASTROVL
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - TX
TX
Prefix range
The prefix 830-355 includes numbers from 8303550000 to 8303559999.
This range is associated with the CASTROVL rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - TX.
Numbers in this prefix
20 numbers