NumberResearchRecent prefix assignments
380 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 |
|---|---|---|---|---|---|
| 787-780 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-781 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-782 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-783 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-784 | PUERTO RICO TEL. CO. | 3201 | LEVITTOWN | PR | |
| 787-785 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-786 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-787 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-788 | PUERTO RICO TEL. CO. | 3201 | CATANO | PR | |
| 787-789 | PUERTO RICO TEL. CO. | 3201 | GUAYNABO | PR | |
| 787-790 | PUERTO RICO TEL. CO. | 3201 | GUAYNABO | PR | |
| 787-791 | PUERTO RICO TEL. CO. | 3201 | ISLA VERDE | PR | |
| 787-792 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-793 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-794 | PUERTO RICO TEL. CO. | 3201 | TOA BAJA | PR | |
| 787-795 | PUERTO RICO TEL. CO. | 3201 | LEVITTOWN | PR | |
| 787-796 | PUERTO RICO TEL. CO. | 3201 | DORADO | PR | |
| 787-797 | PUERTO RICO TEL. CO. | 3201 | BAYAMONSUR | PR | |
| 787-798 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-799 | PUERTO RICO TEL. CO. | 3201 | BAYAMONSUR | PR | |
| 787-801 | PUERTO RICO TEL. CO. | 3201 | FAJARDO | PR | |
| 787-802 | PUERTO RICO TEL. CO. | 3201 | COROZAL | PR | |
| 787-803 | PUERTO RICO TEL. CO. | 3201 | COAMO | PR | |
| 787-804 | PUERTO RICO TEL. CO. | 3201 | SABANAGRND | PR | |
| 787-805 | PUERTO RICO TEL. CO. | 3201 | MAYAGUEZ | PR | |
| 787-806 | PUERTO RICO TEL. CO. | 3201 | MAYAGUEZ | PR | |
| 787-807 | PUERTO RICO TEL. CO. | 3201 | VEGA BAJA | PR | |
| 787-808 | PUERTO RICO TEL. CO. | 3201 | LAJAS | PR | |
| 787-809 | PUERTO RICO TEL. CO. | 3201 | RIO GRANDE | PR | |
| 787-810 | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR | |
| 787-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR | |
| 787-812 | PUERTO RICO TEL. CO. | 3201 | PONCE | PR | |
| 787-813 | PUERTO RICO TEL. CO. | 3201 | PONCE | PR | |
| 787-814 | PUERTO RICO TEL. CO. | 3201 | UTUADO | PR | |
| 787-815 | PUERTO RICO TEL. CO. | 3201 | ARECIBO | PR | |
| 787-816 | PUERTO RICO TEL. CO. | 3201 | ARECIBO | PR | |
| 787-817 | PUERTO RICO TEL. CO. | 3201 | ARECIBO | PR | |
| 787-818 | PUERTO RICO TEL. CO. | 3201 | MOCA | PR | |
| 787-819 | PUERTO RICO TEL. CO. | 3201 | RAMEY | PR | |
| 787-820 | PUERTO RICO TEL. CO. | 3201 | CAMUY | PR | |
| 787-821 | PUERTO RICO TEL. CO. | 3201 | GUANICA | PR | |
| 787-822 | PUERTO RICO TEL. CO. | 3201 | FLORIDA | PR | |
| 787-823 | PUERTO RICO TEL. CO. | 3201 | RINCON | PR | |
| 787-824 | PUERTO RICO TEL. CO. | 3201 | SALINAS | PR | |
| 787-825 | PUERTO RICO TEL. CO. | 3201 | COAMO | PR | |
| 787-826 | PUERTO RICO TEL. CO. | 3201 | ANASCO | PR | |
| 787-827 | PUERTO RICO TEL. CO. | 3201 | LAS MARIAS | PR | |
| 787-828 | PUERTO RICO TEL. CO. | 3201 | JAYUYA | PR | |
| 787-829 | PUERTO RICO TEL. CO. | 3201 | ADJUNTAS | PR | |
| 787-830 | PUERTO RICO TEL. CO. | 3201 | ISABELA | 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.