Phone numbers in Mayaguez, Puerto Rico
Mayaguez has 19 phone prefixes in area codes 787, 939.
Biggest holders: Puerto Rico Tel, T-Mobile (including Sprint), Optivon Telecommunications Services. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 47%
- Local phone company 47%
- Phone company 5%
Every prefix in Mayaguez
Search the first six digits of a number in this list. If it's here, the number started in Mayaguez with the carrier shown. If it isn't, check the Puerto Rico page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 787-265 | Puerto Rico Tel | Local phone company | – |
| 787-335 | Optivon Telecommunications Services | Phone company | – |
| 787-458 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 787-464 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 787-519 | Claro Puerto Rico | Local phone company | – |
| 787-652 | Liberty Mobile Puerto Rico | Mobile carrier | – |
| 787-805 | Puerto Rico Tel | Local phone company | – |
| 787-806 | Puerto Rico Tel | Local phone company | – |
| 787-831 | Puerto Rico Tel | Local phone company | – |
| 787-832 | Puerto Rico Tel | Local phone company | – |
| 787-833 | Puerto Rico Tel | Local phone company | – |
| 787-834 | Puerto Rico Tel | Local phone company | – |
| 787-951 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 787-986 | Puerto Rico Tel | Local phone company | – |
| 939-299 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 939-361 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 939-606 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 939-641 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 939-865 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
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.