Prefix overview
Phone numbers in prefix 443-203
This page covers the 443-203 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
443-203
RATE CENTER
WEST RIVER
CARRIER
VERIZON MARYLAND, INC.
MD
Prefix range
The prefix 443-203 includes numbers from 4432030000 to 4432039999.
This range is associated with the WEST RIVER rate center and was originally assigned to VERIZON MARYLAND, INC..
Numbers in this prefix
20 numbers