Prefix 787-579 — Trujillo Alto, PR

NANPA CO code assignment, current as of July 28, 2026.

Area code
787
Prefix (NXX)
579
Rate center
Trujillo Alto
State
Puerto Rico
Time zone
Atlantic
Code holder
PUERTO RICO TELCO DBA CLARO PUERTO RICO
OCN
4823
Pooled
No
Assigned
2001-04-20
LATA
820

The 787-579 prefix belongs to area code 787 and is anchored to the Trujillo Alto rate center (PR). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Trujillo Alto is part of the San Juan-Bayamón-Caguas, PR Metropolitan Statistical Area. For routing purposes it sits in LATA 820. Numbers here keep Atlantic time.

The assigned code holder is PUERTO RICO TELCO DBA CLARO PUERTO RICO, operating company number 4823, assigned April 20, 2001. The prefix is not pooled, so the full 10,000-number block sits with the code holder (subject to number portability).

Caller ID showing 787-579 is not proof the call came from Trujillo Alto: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.

Neighboring prefixes

Prefixes adjacent to 787-579
PrefixRate centerCode holder
787-576 Bayamon Norte BORINQUEN BEEPERS, INC.
787-577 Bayamon Norte BORINQUEN BEEPERS, INC.
787-578 Bayamon Norte BORINQUEN BEEPERS, INC.
787-580 Juana Diaz LIBERTY MOBILE PUERTO RICO INC.
787-581 Santurce LINK TECH CORPORATION
787-582 Santurce LINK TECH CORPORATION

FAQ

Where is 787-579 located?

The prefix is assigned to the Trujillo Alto rate center in PR, area code 787. It is part of the San Juan-Bayamón-Caguas, PR Metropolitan Statistical Area.

Which company owns 787-579 numbers?

PUERTO RICO TELCO DBA CLARO PUERTO RICO holds the code. Individual numbers may still be ported to other providers.

Is a call from 787-579 safe to answer?

The prefix itself says nothing about the caller. Legitimate Trujillo Alto businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.