This numerical identifier designates telephone lines within a specific geographic region of California. It is a three-digit prefix that precedes the seven-digit local number when dialing. As an example, a valid phone number in this zone would adhere to the format 831-XXX-XXXX.
This identifier is crucial for telecommunications, facilitating efficient routing of calls to the correct destination. The region it serves encompasses the Monterey Bay area, contributing to the local identity and enabling businesses and residents to connect. It was established in 1998, splitting from the 408 area code due to population growth and increased demand for telephone numbers.