Guayanilla, PR — rate center
- State
- Puerto Rico
- Active prefixes
- 7
- Carriers
- 5
- Pooled prefixes
- 5
- LATA
- 820
Guayanilla is a telephone rate center in Puerto Rico served by area codes 787, 939. A rate center is the locality the phone industry uses to anchor numbers for billing; every prefix listed below is registered here.
The rate center currently carries 7 working prefixes, held by 5 different carriers. Pooling applies to 5 of them — individual thousands-blocks may belong to different companies.
Routing-wise it sits in LATA 820.
Because 787, 939 all serve this territory, two Guayanilla numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Guayanilla prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Guayanilla
| Prefix | Code holder | Pooled |
|---|---|---|
| 787-301 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | No |
| 787-543 | METROPCS, INC. | Yes |
| 787-606 | SUNCOM DBA T-MOBILE USA | Yes |
| 787-835 | PUERTO RICO TEL. CO. | No |
| 787-927 | LIBERTY MOBILE PUERTO RICO INC. | Yes |
| 787-973 | LIBERTY MOBILE PUERTO RICO INC. | Yes |
FAQ
What area code is Guayanilla, PR?
Guayanilla is served by 2 area codes — 787, 939 — which overlay the same territory.
How many prefixes does Guayanilla have?
7 active NXX prefixes are anchored to this rate center in NANPA records, held by 5 carriers.
Is a call from a Guayanilla prefix really from Guayanilla?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.