Prefix overview
Phone numbers in prefix 203-423
This page covers the 203-423 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
203-423
RATE CENTER
WILTON
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - CT
CT
Prefix range
The prefix 203-423 includes numbers from 2034230000 to 2034239999.
This range is associated with the WILTON rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - CT.
Numbers in this prefix
20 numbers