Prefix overview
Phone numbers in prefix 657-387
This page covers the 657-387 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
657-387
RATE CENTER
YORBALINDA
CARRIER
ONVOY, LLC - CA
CA
Prefix range
The prefix 657-387 includes numbers from 6573870000 to 6573879999.
This range is associated with the YORBALINDA rate center and was originally assigned to ONVOY, LLC - CA.
Numbers in this prefix
20 numbers