Prefix 787-438 — Santurce, PR

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

Area code
787
Prefix (NXX)
438
Rate center
Santurce
State
Puerto Rico
Time zone
Atlantic
Code holder
LIBERTY MOBILE PUERTO RICO INC.
OCN
639J
Pooled
No
Assigned
2001-05-18
LATA
820

The 787-438 prefix belongs to area code 787 and is anchored to the Santurce rate center (PR). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Santurce 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.

Code-holder of record: LIBERTY MOBILE PUERTO RICO INC. (OCN 639J), assigned May 18, 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 787-438 is not proof the call came from Santurce: 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 787-438
PrefixRate centerCode holder
787-435 Fajardo METROPCS, INC.
787-436 Caguas LIBERTY MOBILE PUERTO RICO INC.
787-437 Jayuya WORLDNET TELECOMMUNICATIONS, INC. - PR
787-439 Santurce LIBERTY MOBILE PUERTO RICO INC.
787-440 Rio Piedras IP SOLUTIONS, INC. - PR
787-441 Rio Piedras IP SOLUTIONS, INC. - PR

FAQ

Where is 787-438 located?

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

Which company owns 787-438 numbers?

LIBERTY MOBILE PUERTO RICO INC. holds the code. Individual numbers may still be ported to other providers.

Is a call from 787-438 safe to answer?

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