Prefix overview
Phone numbers in prefix 563-661
This page covers the 563-661 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
563-661
RATE CENTER
MAQUOKETA
CARRIER
ONVOY, LLC - IA
IA
Prefix range
The prefix 563-661 includes numbers from 5636610000 to 5636619999.
This range is associated with the MAQUOKETA rate center and was originally assigned to ONVOY, LLC - IA.
Numbers in this prefix
20 numbers