Prefix overview
Phone numbers in prefix 660-203
This page covers the 660-203 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
660-203
RATE CENTER
ALMA
CARRIER
GREEN HILLS TELECOMMUNICATIONS SERVICES
MO
Prefix range
The prefix 660-203 includes numbers from 6602030000 to 6602039999.
This range is associated with the ALMA rate center and was originally assigned to GREEN HILLS TELECOMMUNICATIONS SERVICES.
Numbers in this prefix
20 numbers