Los Angeles:da 12, CA — rate center

NANPA rate center & CO code data, current as of July 28, 2026.

The Los Angeles:da 12 rate center (California) anchors 45 active prefixes under area codes 213, 323, 738. Rate centers, not city limits, are what phone numbers are legally tied to.

45 central-office prefixes are currently anchored to this rate center across 16 carriers. 36 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.

The rate center belongs to the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area. Routing-wise it sits in LATA 730.

Multiple area codes over one rate center (213/323/738) is the overlay pattern: same geography, different first three digits.

Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.

Prefixes anchored to Los Angeles:da 12

FAQ

What area code is Los Angeles:da 12, CA?

Los Angeles:da 12 is served by 3 area codes — 213, 323, 738 — which overlay the same territory.

How many prefixes does Los Angeles:da 12 have?

45 active NXX prefixes are anchored to this rate center in NANPA records, held by 16 carriers.

Is a call from a Los Angeles:da 12 prefix really from Los Angeles:da 12?

Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.