NumberResearchRecent prefix assignments
352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 787-457 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-460 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-462 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-465 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | NAGUABO | PR | |
| 787-466 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-467 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-470 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-471 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | COAMO | PR | |
| 787-472 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-473 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-474 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | RIOPIEDRAS | PR | |
| 787-479 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-484 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TRUJILLOAL | PR | |
| 787-485 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-486 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TRUJILLOAL | PR | |
| 787-487 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TRUJILLOAL | PR | |
| 787-488 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | BAYAMONSUR | PR | |
| 787-489 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | BAYAMONNOR | PR | |
| 787-490 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | CAYEY | PR | |
| 787-491 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | GURABO | PR | |
| 787-492 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | PONCE | PR | |
| 787-493 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | AGUADILLA | PR | |
| 787-494 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | FAJARDO | PR | |
| 787-495 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | NARANJITO | PR | |
| 787-496 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | SAN GERMAN | PR | |
| 787-497 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | SANTURCEES | PR | |
| 787-498 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | VEGA BAJA | PR | |
| 787-499 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | PONCE | PR | |
| 787-501 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-502 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-503 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-504 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-505 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-506 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-507 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-508 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-509 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-510 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 787-512 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-514 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | FAJARDO | PR | |
| 787-515 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | MANATI | PR | |
| 787-516 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | NARANJITO | PR | |
| 787-517 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | AGUADILLA | PR | |
| 787-518 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TOA BAJA | PR | |
| 787-519 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | MAYAGUEZ | PR | |
| 787-520 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SANTURCE | PR | |
| 787-521 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SANTURCE | PR | |
| 787-522 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SANTURCE | PR | |
| 787-523 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SANTURCE | PR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.