Prefix overview
Phone numbers in prefix 620-478
This page covers the 620-478 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
620-478
RATE CENTER
NORWICH
CARRIER
HAVILAND TEL. CO., INC.
KS
Prefix range
The prefix 620-478 includes numbers from 6204780000 to 6204789999.
This range is associated with the NORWICH rate center and was originally assigned to HAVILAND TEL. CO., INC..
Numbers in this prefix
20 numbers