Prefix overview
Phone numbers in prefix 810-581
This page covers the 810-581 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
810-581
RATE CENTER
MARINECITY
CARRIER
SPOK, INC.
MI
Prefix range
The prefix 810-581 includes numbers from 8105810000 to 8105819999.
This range is associated with the MARINECITY rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers