Prefix overview
Phone numbers in prefix 203-439
This page covers the 203-439 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
203-439
RATE CENTER
CHESHIRE
CARRIER
COMCAST IP PHONE, LLC
CT
Prefix range
The prefix 203-439 includes numbers from 2034390000 to 2034399999.
This range is associated with the CHESHIRE rate center and was originally assigned to COMCAST IP PHONE, LLC.
Numbers in this prefix
20 numbers