Prefix overview
Phone numbers in prefix 240-251
This page covers the 240-251 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
240-251
RATE CENTER
HIGHFIELD
CARRIER
CORE COMMUNICATIONS, INC.- MD
MD
Prefix range
The prefix 240-251 includes numbers from 2402510000 to 2402519999.
This range is associated with the HIGHFIELD rate center and was originally assigned to CORE COMMUNICATIONS, INC.- MD.
Numbers in this prefix
20 numbers