Prefix overview
Phone numbers in prefix 309-380
This page covers the 309-380 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
309-380
RATE CENTER
ROCKISLAND
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
IL
Prefix range
The prefix 309-380 includes numbers from 3093800000 to 3093809999.
This range is associated with the ROCKISLAND rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers