Prefix overview
Phone numbers in prefix 771-255
This page covers the 771-255 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
771-255
RATE CENTER
WSHNGTNZN1
CARRIER
IP HORIZON LLC
DC
Prefix range
The prefix 771-255 includes numbers from 7712550000 to 7712559999.
This range is associated with the WSHNGTNZN1 rate center and was originally assigned to IP HORIZON LLC.
Numbers in this prefix
20 numbers