Prefix overview
Phone numbers in prefix 850-403
This page covers the 850-403 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
850-403
RATE CENTER
YONGSTFNTN
CARRIER
LEVEL 3 COMMUNICATIONS, LLC - FL
FL
Prefix range
The prefix 850-403 includes numbers from 8504030000 to 8504039999.
This range is associated with the YONGSTFNTN rate center and was originally assigned to LEVEL 3 COMMUNICATIONS, LLC - FL.
Numbers in this prefix
20 numbers