Prefix overview
Phone numbers in prefix 305-421
This page covers the 305-421 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
305-421
RATE CENTER
MIAMI
CARRIER
TELEPORT COMMUNICATIONS AMERICA, LLC - FL
FL
Prefix range
The prefix 305-421 includes numbers from 3054210000 to 3054219999.
This range is associated with the MIAMI rate center and was originally assigned to TELEPORT COMMUNICATIONS AMERICA, LLC - FL.
Numbers in this prefix
20 numbers