Prefix overview
Phone numbers in prefix 313-344
This page covers the 313-344 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
313-344
RATE CENTER
DETROITZN2
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - MI
MI
Prefix range
The prefix 313-344 includes numbers from 3133440000 to 3133449999.
This range is associated with the DETROITZN2 rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - MI.
Numbers in this prefix
20 numbers