415 area code — San Francisco:central Da, CA geographic

Data: NANPA public reports, current as of July 28, 2026.

Phone numbers beginning 415 are registered to the San Francisco:central Da area of California (Pacific time zone). The code entered service on January 1, 1947. Together with 628 it forms the 415/628 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.

NANPA lists 784 active NXX prefixes in 415, assigned to 33 carriers. 494 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 14 rate centers (billing localities).

To check where a specific 415 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.

Later relief produced 209 (1958), 408 (1959), 707 (1959), 510 (1991), 650 (1997), 628 (2015) from its territory.

Official projections put exhaust for the 415/628 complex at 4Q 2072.

The dialing plan is 1+10D for home-NPA local calls and 1+10D across codes.

Largest localities in 415

FAQ

Will 415 run out of numbers?

NANPA's current forecast projects exhaust in 4Q 2072 — decades of capacity remain.

Why am I getting spam calls from 415 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 415 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 415 number from?

415 is assigned to San Francisco:central Da and surrounding areas of California in the Pacific time zone. The three digits after the area code (the prefix) narrow it down to a rate center.

Is 415 a toll-free number?

No. 415 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.