Prefix overview
Phone numbers in prefix 731-318
This page covers the 731-318 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
731-318
RATE CENTER
MILAN
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
TN
Prefix range
The prefix 731-318 includes numbers from 7313180000 to 7313189999.
This range is associated with the MILAN rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers