Prefix overview
Phone numbers in prefix 858-399
This page covers the 858-399 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
858-399
RATE CENTER
CORONADO
CARRIER
FRACTEL, LLC
CA
Prefix range
The prefix 858-399 includes numbers from 8583990000 to 8583999999.
This range is associated with the CORONADO rate center and was originally assigned to FRACTEL, LLC.
Numbers in this prefix
20 numbers