Prefix overview
Phone numbers in prefix 401-321
This page covers the 401-321 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
401-321
RATE CENTER
HOPEVALLEY
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
RI
Prefix range
The prefix 401-321 includes numbers from 4013210000 to 4013219999.
This range is associated with the HOPEVALLEY rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers