Prefix overview
Phone numbers in prefix 878-378
This page covers the 878-378 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
878-378
RATE CENTER
WESTNEWTON
CARRIER
ONVOY, LLC - PA
PA
Prefix range
The prefix 878-378 includes numbers from 8783780000 to 8783789999.
This range is associated with the WESTNEWTON rate center and was originally assigned to ONVOY, LLC - PA.
Numbers in this prefix
20 numbers