Prefix overview
Phone numbers in prefix 650-231
This page covers the 650-231 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
650-231
RATE CENTER
MILLBRAE
CARRIER
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
CA
Prefix range
The prefix 650-231 includes numbers from 6502310000 to 6502319999.
This range is associated with the MILLBRAE rate center and was originally assigned to MCIMETRO ACCESS TRANSMISSION SERVICES LLC.
Numbers in this prefix
20 numbers