Prefix overview
Phone numbers in prefix 401-398
This page covers the 401-398 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
401-398
RATE CENTER
GREENWICH
CARRIER
COMCAST IP PHONE, LLC
RI
Prefix range
The prefix 401-398 includes numbers from 4013980000 to 4013989999.
This range is associated with the GREENWICH rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers