Prefix overview
Phone numbers in prefix 414-378
This page covers the 414-378 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
414-378
RATE CENTER
MILWAUKZN1
CARRIER
NEW CINGULAR WIRELESS PCS, LLC - IL
WI
Prefix range
The prefix 414-378 includes numbers from 4143780000 to 4143789999.
This range is associated with the MILWAUKZN1 rate center and was originally assigned to NEW CINGULAR WIRELESS PCS, LLC - IL.
Numbers in this prefix
20 numbers