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 |
|---|---|---|---|---|---|
| 787-393 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-394 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-396 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-397 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-398 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-399 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-401 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-402 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-403 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-404 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-405 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-406 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-407 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-408 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-409 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 787-412 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-413 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | PR | |
| 787-414 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-415 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-416 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | ARROYO | PR | |
| 787-417 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | SANTURCE | PR | |
| 787-418 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | CAROLINA | PR | |
| 787-419 | OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR | 087D | SANTURCE | PR | |
| 787-420 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-421 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-422 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-423 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-424 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-425 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-426 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-427 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-428 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-429 | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR | |
| 787-430 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-433 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-434 | LIBERTY MOBILE PUERTO RICO INC. | 8305 | CIDRA | PR | |
| 787-439 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-440 | IP SOLUTIONS, INC. - PR | 266G | RIOPIEDRAS | PR | |
| 787-441 | IP SOLUTIONS, INC. - PR | 266G | RIOPIEDRAS | PR | |
| 787-442 | IP SOLUTIONS, INC. - PR | 266G | RIOPIEDRAS | PR | |
| 787-443 | IP SOLUTIONS, INC. - PR | 266G | RIOPIEDRAS | PR | |
| 787-445 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TRUJILLOAL | PR | |
| 787-446 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | TRUJILLOAL | PR | |
| 787-447 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-448 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-449 | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR | |
| 787-450 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-451 | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | SANTURCE | PR | |
| 787-455 | LIBERTY MOBILE PUERTO RICO INC. | 639J | RIOPIEDRAS | 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.