Prefix overview
Phone numbers in prefix 787-331
This page covers the 787-331 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
787-331
RATE CENTER
GUAYNABO
CARRIER
OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR
PR
Prefix range
The prefix 787-331 includes numbers from 7873310000 to 7873319999.
This range is associated with the GUAYNABO rate center and was originally assigned to OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR.
Numbers in this prefix
20 numbers