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 |
|---|---|---|---|---|---|---|
| 2024-03-12 | 860-401 | 0XXX1XXX · 2 holders which blocks → | ONVOY, LLC - CT | 639C | DANIELSON | CT |
| 2022-10-25 | 860-743 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - CT | 639C | MANCHESTER | CT |
| 2015-11-23 | 860-200 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CT | 639C | HARTFORD | CT |
| 2015-01-21 | 860-969 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - CT | 639C | HARTFORD | CT |
| 2006-04-05 | 860-970 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - CT | 639C | HARTFORD | CT |
| — | 860-385 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - CT | 639C | SOUTHINGTN | CT |
| — | 860-590 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CT | 639C | WATERTOWN | CT |
| — | 860-718 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CT | 639C | DEEP RIVER | CT |
| — | 860-758 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CT | 639C | WINDSORLKS | CT |
| — | 860-775 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | ONVOY, LLC - CT | 639C | E HAMPTON | CT |
| — | 860-783 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - CT | 639C | MANCHESTER | CT |
| — | 860-845 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CT | 639C | BRISTOL | CT |
| — | 860-846 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - CT | 639C | PLAINVILLE | CT |
| — | 860-855 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CT | 639C | PLAINVILLE | CT |
| — | 860-864 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CT | 639C | STORRS | CT |
| — | 860-962 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - CT | 639C | ENFIELD | CT |
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.