Prefix overview
Phone numbers in prefix 307-274
This page covers the 307-274 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
307-274
RATE CENTER
CHEYENNE
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
WY
Prefix range
The prefix 307-274 includes numbers from 3072740000 to 3072749999.
This range is associated with the CHEYENNE rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers