NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2023-08-11 | 582-522 | 0XXX2XXX7XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CAMBDG SPG | PA |
| 2023-08-11 | 582-588 | 0XXX3XXX8XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | FAIRVIEW | PA |
| 2023-08-11 | 582-833 | 0XXX3XXX7XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | UNION CITY | PA |
| 2023-07-27 | 582-580 | 0XXX1XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SABINSVL | PA |
| 2023-07-27 | 582-582 | 2XXX5XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | STOYSTOWN | PA |
| 2023-07-27 | 582-802 | 0XXX1XXX2XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TYRONE | PA |
| 2023-07-27 | 582-880 | 0XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | SYKESVILLE | PA |
| 2023-07-27 | 582-882 | 0XXX2XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | TIDIOUTE | PA |
| 2023-01-13 | 582-231 | 0XXX1XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SMETHPORT | PA |
| 2021-10-07 | 582-710 | 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | OIL CITY | PA |
| 2021-09-16 | 582-901 | 9XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | PENFIELD | PA |
| 2021-06-17 | 582-282 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CORSICA | PA |
| 2021-06-17 | 582-302 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | DAYTON | PA |
| 2021-06-17 | 582-442 | 0XXX1XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | GLENCMPBLL | PA |
| 2021-06-17 | 582-482 | 2XXX3XXX4XXX6XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HAWTHORN | PA |
| 2021-06-17 | 582-583 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HAZEN | PA |
| 2021-05-05 | 582-998 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BELLWOOD | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.