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
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 787-730 | PUERTO RICO TEL. CO. | 3201 | BAYAMONSUR | PR | |
| 787-731 | PUERTO RICO TEL. CO. | 3201 | GUAYNABO | PR | |
| 787-732 | PUERTO RICO TEL. CO. | 3201 | AGUASBUNAS | PR | |
| 787-733 | PUERTO RICO TEL. CO. | 3201 | LASPIEDRAS | PR | |
| 787-734 | PUERTO RICO TEL. CO. | 3201 | JUNCOS | PR | |
| 787-735 | PUERTO RICO TEL. CO. | 3201 | AIBONITO | PR | |
| 787-736 | PUERTO RICO TEL. CO. | 3201 | SANLORENZO | PR | |
| 787-737 | PUERTO RICO TEL. CO. | 3201 | GURABO | PR | |
| 787-738 | PUERTO RICO TEL. CO. | 3201 | CAYEY | PR | |
| 787-739 | PUERTO RICO TEL. CO. | 3201 | CIDRA | PR | |
| 787-740 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-741 | PUERTO RICO TEL. CO. | 3201 | VIEQUES | PR | |
| 787-742 | PUERTO RICO TEL. CO. | 3201 | CULEBRA | PR | |
| 787-743 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-744 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-745 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-746 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-747 | PUERTO RICO TEL. CO. | 3201 | CAGUAS | PR | |
| 787-748 | PUERTO RICO TEL. CO. | 3201 | TRUJILLOAL | PR | |
| 787-749 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-750 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-751 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-752 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-753 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-754 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-755 | PUERTO RICO TEL. CO. | 3201 | TRUJILLOAL | PR | |
| 787-756 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-757 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-758 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-759 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-760 | PUERTO RICO TEL. CO. | 3201 | TRUJILLOAL | PR | |
| 787-761 | PUERTO RICO TEL. CO. | 3201 | TRUJILLOAL | PR | |
| 787-762 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-763 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-764 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-765 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-766 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-767 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-768 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-769 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-770 | PR | ||||
| 787-771 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-772 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-773 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-774 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-775 | PUERTO RICO TEL. CO. | 3201 | PUEBLOVIEJ | PR | |
| 787-776 | PUERTO RICO TEL. CO. | 3201 | CAROLINA | PR | |
| 787-777 | PUERTO RICO TEL. CO. | 3201 | RIOPIEDRAS | PR | |
| 787-778 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | PR | |
| 787-779 | PUERTO RICO TEL. CO. | 3201 | BAYAMONNOR | 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.