Prefix overview
Phone numbers in prefix 307-353
This page covers the 307-353 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
307-353
RATE CENTER
ALTA
CARRIER
COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS
WY
Prefix range
The prefix 307-353 includes numbers from 3073530000 to 3073539999.
This range is associated with the ALTA rate center and was originally assigned to COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS.
Numbers in this prefix
20 numbers