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 |
|---|---|---|---|---|---|---|
| 2024-03-20 | 518-845 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC- NY | 384C | COLONIE | NY |
| 2024-03-14 | 518-838 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC- NY | 384C | TROY | NY |
| 2019-02-15 | 518-718 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → | ONVOY, LLC- NY | 384C | TANNERSVL | NY |
| 2018-06-13 | 518-995 | 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC- NY | 384C | WILMINGTON | NY |
| 2017-05-09 | 518-413 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC- NY | 384C | BOLTON LDG | NY |
| 2017-04-11 | 518-916 | 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → | ONVOY, LLC- NY | 384C | GREENVILLE | NY |
| 2017-04-11 | 518-972 | 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | ONVOY, LLC- NY | 384C | PRATTSVL | NY |
| 2017-01-10 | 518-909 | 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | ONVOY, LLC- NY | 384C | GRANVILLE | NY |
| 2016-09-14 | 518-808 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC- NY | 384C | FORT ANN | NY |
| 2016-05-02 | 518-559 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC- NY | 384C | CAMBRIDGE | NY |
| 2016-03-07 | 518-501 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC- NY | 384C | SOBETHLEHM | NY |
| 2015-12-21 | 518-401 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC- NY | 384C | GLENSFALLS | NY |
| 2015-12-14 | 518-707 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC- NY | 384C | SCHENCTADY | NY |
| 2015-04-27 | 518-941 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC- NY | 384C | ALBANY | NY |
| 2014-12-24 | 518-676 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC- NY | 384C | FORT ANN | NY |
| 2010-11-04 | 518-380 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC- NY | 384C | ALBANY | NY |
| 2006-07-03 | 518-763 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC- NY | 384C | ALBANY | NY |
| — | 518-500 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC- NY | 384C | CENTRALBDG | NY |
| — | 518-600 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC- NY | 384C | SARANAC | NY |
| — | 518-665 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC- NY | 384C | MECHANICVL | NY |
| — | 518-777 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC- NY | 384C | SHARON SPG | NY |
| — | 518-800 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY, LLC- NY | 384C | ARGYLE | NY |
| — | 518-818 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC- NY | 384C | ALBANY | NY |
| — | 518-888 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC- NY | 384C | ALBANY | NY |
| — | 518-900 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | ONVOY, LLC- NY | 384C | CLARKSVL | 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.