Prefix overview
Phone numbers in prefix 440-343
This page covers the 440-343 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
440-343
RATE CENTER
WILLOUGHBY
CARRIER
T-MOBILE USA, INC.
OH
Prefix range
The prefix 440-343 includes numbers from 4403430000 to 4403439999.
This range is associated with the WILLOUGHBY rate center and was originally assigned to T-MOBILE USA, INC..
Numbers in this prefix
20 numbers