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 |
|---|---|---|---|---|---|---|
| 2021-05-06 | 838-322 | 3XXX9XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SHARON SPG | NY |
| 2021-05-06 | 838-328 | 3XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PUTNAM | NY |
| 2021-05-06 | 838-440 | 1XXX2XXX4XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | WHITEHALL | NY |
| 2021-05-06 | 838-878 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SALEM | NY |
| 2021-04-07 | 838-448 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | KEENE | NY |
| 2021-04-07 | 838-558 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | LYON MT | NY |
| 2021-04-07 | 838-638 | 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MARIAVILLE | NY |
| 2021-04-07 | 838-738 | 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PHILMONT | NY |
| 2021-04-07 | 838-938 | 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PORT HENRY | NY |
| 2021-03-30 | 838-668 | 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CAMBRIDGE | NY |
| 2021-03-30 | 838-733 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | JONESVILLE | NY |
| 2021-03-30 | 838-848 | 0XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | FORT ANN | NY |
| 2021-03-30 | 838-858 | 0XXX1XXX5XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HAGUE | NY |
| 2021-03-30 | 838-868 | 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HAMPTON | NY |
| 2021-01-07 | 838-380 | 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | LAKEGEORGE | NY |
| 2021-01-07 | 838-385 | 0XXX1XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MINEVILLE | NY |
| 2021-01-07 | 838-387 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MOIRA | NY |
| 2021-01-07 | 838-884 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PITTSTOWN | NY |
| 2020-12-31 | 838-388 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BERNE | NY |
| 2020-12-31 | 838-883 | 0XXX1XXX3XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CASTLETON | NY |
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.