Prefix overview
Phone numbers in prefix 274-999
This page covers the 274-999 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
274-999
RATE CENTER
CASCO
CARRIER
ONVOY, LLC - WI
WI
Prefix range
The prefix 274-999 includes numbers from 2749990000 to 2749999999.
This range is associated with the CASCO rate center and was originally assigned to ONVOY, LLC - WI.
Numbers in this prefix
20 numbers