Prefix overview
Phone numbers in prefix 301-456
This page covers the 301-456 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
301-456
RATE CENTER
WSHNGTNZN5
CARRIER
COMCAST IP PHONE, LLC
MD
Prefix range
The prefix 301-456 includes numbers from 3014560000 to 3014569999.
This range is associated with the WSHNGTNZN5 rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers