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 |
|---|---|---|---|---|---|---|
| 2024-09-27 | 681-547 | 1XXX2XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | SHEPHEDSTN | WV |
| 2023-05-04 | 681-871 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | WELCH | WV |
| 2021-06-15 | 681-644 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HINTON | WV |
| 2021-06-15 | 681-684 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HNTNGTNZN1 | WV |
| 2021-06-15 | 681-770 | 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | HURRICANE | WV |
| 2021-06-15 | 681-782 | 2XXX3XXX4XXX7XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | LEON | WV |
| 2021-06-15 | 681-788 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | MAN | WV |
| 2021-05-06 | 681-466 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CHRLSTNZN2 | WV |
| 2021-05-06 | 681-488 | 0XXX4XXX5XXX8XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BRADSHAW | WV |
| 2021-05-06 | 681-686 | 2XXX6XXX · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | DUTCHRIDGE | WV |
| 2021-05-05 | 681-335 | 0XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | ALDERSON | WV |
| 2021-05-05 | 681-388 | 0XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | APPLEGROVE | WV |
| 2021-04-27 | 681-401 | 4XXX6XXX7XXX which blocks → | ONVOY SPECTRUM, LLC | 624H | BERKELYSPG | WV |
| 2019-10-07 | 681-510 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | BLUEFIELD | WV |
| 2019-10-07 | 681-710 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CHRLSTNZN1 | WV |
| 2019-10-07 | 681-810 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | CLARKSBURG | WV |
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.