Trujillo Alto, PR — rate center

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

The Trujillo Alto rate center (Puerto Rico) anchors 69 active prefixes under area codes 787, 939. Rate centers, not city limits, are what phone numbers are legally tied to.

69 central-office prefixes are currently anchored to this rate center across 6 carriers. 13 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.

The rate center belongs to the San Juan-Bayamón-Caguas, PR Metropolitan Statistical Area. Routing-wise it sits in LATA 820.

Multiple area codes over one rate center (787/939) 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 Trujillo Alto

FAQ

What area code is Trujillo Alto, PR?

Trujillo Alto is served by 2 area codes — 787, 939 — which overlay the same territory.

How many prefixes does Trujillo Alto have?

69 active NXX prefixes are anchored to this rate center in NANPA records, held by 6 carriers.

Is a call from a Trujillo Alto prefix really from Trujillo Alto?

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