Prefix overview
Phone numbers in prefix 858-312
This page covers the 858-312 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
858-312
RATE CENTER
RNCHOBRNDO
CARRIER
COMCAST IP PHONE, LLC
CA
Prefix range
The prefix 858-312 includes numbers from 8583120000 to 8583129999.
This range is associated with the RNCHOBRNDO rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers