Prefix overview
Phone numbers in prefix 203-289
This page covers the 203-289 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
203-289
RATE CENTER
DANBURY
CARRIER
SPOK, INC.
CT
Prefix range
The prefix 203-289 includes numbers from 2032890000 to 2032899999.
This range is associated with the DANBURY rate center and was originally assigned to SPOK, INC..
Numbers in this prefix
20 numbers