Prefix overview
Phone numbers in prefix 231-386
This page covers the 231-386 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
231-386
RATE CENTER
NORTHPORT
CARRIER
MICHIGAN BELL TEL CO
MI
Prefix range
The prefix 231-386 includes numbers from 2313860000 to 2313869999.
This range is associated with the NORTHPORT rate center and was originally assigned to MICHIGAN BELL TEL CO.
Numbers in this prefix
20 numbers