Prefix overview
Phone numbers in prefix 831-386
This page covers the 831-386 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
831-386
RATE CENTER
KING CITY
CARRIER
PACIFIC BELL
CA
Prefix range
The prefix 831-386 includes numbers from 8313860000 to 8313869999.
This range is associated with the KING CITY rate center and was originally assigned to PACIFIC BELL.
Numbers in this prefix
20 numbers