Phone numbers in Toa Baja, Puerto Rico
Toa Baja has 4 phone prefixes in area codes 787, 939.
Biggest holders: Worldnet Telecommunications, Claro Puerto Rico, Puerto Rico Tel. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 50%
- Internet / business phone carrier 25%
- Phone company 25%
Every prefix in Toa Baja
Search the first six digits of a number in this list. If it's here, the number started in Toa Baja with the carrier shown. If it isn't, check the Puerto Rico page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 787-230 | Worldnet Telecommunications | Phone company | 2007 |
| 787-518 | Claro Puerto Rico | Local phone company | – |
| 787-794 | Puerto Rico Tel | Local phone company | – |
| 939-434 | Onvoy | Internet / business phone carrier | 2023 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.