NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2023-11-06 | 939-593 | 0XXX3XXX5XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | AIBONITO | PR |
| 2023-11-06 | 939-693 | 0XXX1XXX6XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | ARROYO | PR |
| 2023-11-06 | 939-793 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CAROLINA | PR |
| 2023-11-06 | 939-893 | 0XXX3XXX8XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CIDRA | PR |
| 2023-11-06 | 939-938 | 0XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | ISLA VERDE | PR |
| 2023-11-06 | 939-939 | 0XXX9XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SALINAS | PR |
| 2023-11-03 | 939-373 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | AGUADILLA | PR |
| 2023-11-03 | 939-374 | 3XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | CIALES | PR |
| 2023-11-03 | 939-434 | 0XXX4XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TOA BAJA | PR |
| 2023-11-03 | 939-733 | 0XXX1XXX7XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | NARANJITO | PR |
| 2023-11-03 | 939-737 | 0XXX1XXX2XXX7XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BAYAMONNOR | PR |
| 2023-04-05 | 939-360 | 3XXX9XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PUEBLOVIEJ | PR |
| 2023-04-05 | 939-787 | 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BAYAMONSUR | PR |
| 2007-03-21 | 939-309 | 0XXX1XXX3XXX6XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | GUAYAMA | PR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.