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 |
|---|---|---|---|---|---|---|
| 2023-01-11 | 870-980 | 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → | ONVOY, LLC - AR | 348F | GRUBBS | AR |
| 2023-01-06 | 870-967 | 0XXX1XXX2XXX8XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | CONCORD | AR |
| 2022-02-24 | 870-855 | 0XXX5XXX8XXX · 2 holders which blocks → | ONVOY, LLC - AR | 348F | MELBOURNE | AR |
| 2022-02-24 | 870-865 | 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | EL DORADO | AR |
| 2022-02-24 | 870-902 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - AR | 348F | BLYTHEVL | AR |
| 2020-11-27 | 870-876 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | JESUP | AR |
| 2019-10-10 | 870-860 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - AR | 348F | HARDY | AR |
| 2018-09-21 | 870-800 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - AR | 348F | ROSSTON | AR |
| 2017-10-18 | 870-888 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - AR | 348F | ASHDOWN | AR |
| — | 870-432 | 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | PRESCOTT | AR |
| — | 870-515 | 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | PINE BLUFF | AR |
| — | 870-610 | 0XXX1XXX2XXX6XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | HATFIELD | AR |
| — | 870-706 | 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → | ONVOY, LLC - AR | 348F | MT HOME | AR |
| — | 870-906 | 0XXX1XXX2XXX · 3 holders which blocks → | ONVOY, LLC - AR | 348F | STAR CITY | AR |
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.