Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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.

Most active assignees, all time — NPA 608

ONVOY, LLC - WI 50

New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2025-08-21	608-990	0XXX3XXX4XXX9XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	BARABOO	WI
2025-08-21	608-991	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - WI	225C	BELOIT	WI
2025-08-21	608-993	8XXX9XXX which blocks →	ONVOY, LLC - WI	225C	COBB	WI
2025-02-05	608-961	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2024-08-07	608-608	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2024-06-12	608-940	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2024-06-12	608-941	0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	SUNPRAIRIE	WI
2024-03-19	608-928	0XXX which blocks →	ONVOY, LLC - WI	225C	TOMAH	WI
2024-03-15	608-923	0XXX1XXX which blocks →	ONVOY, LLC - WI	225C	OREGON	WI
2023-06-22	608-353	0XXX2XXX3XXX8XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	MELROSE	WI
2023-06-22	608-809	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	BARABOO	WI
2023-02-08	608-871	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	LA CROSSE	WI
2023-02-08	608-891	0XXX1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	VIROQUA	WI
2022-05-09	608-805	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	REEDSBURG	WI
2022-02-04	608-414	1XXX2XXX4XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	MINERAL PT	WI
2021-07-15	608-703	0XXX1XXX3XXX6XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - WI	225C	NEW GLARUS	WI
2021-07-14	608-674	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	MILTON	WI
2021-07-14	608-702	0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	PARDEEVL	WI
2021-07-02	608-505	0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	POYNETTE	WI
2021-07-02	608-506	0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 7 holders which blocks →	ONVOY, LLC - WI	225C	WONEWOC	WI
2021-06-24	608-502	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - WI	225C	EVANSVILLE	WI
2020-12-21	608-453	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WI	225C	SUNPRAIRIE	WI
2020-12-21	608-454	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	OREGON	WI
2020-12-21	608-456	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	ORFORDVL	WI
2020-12-21	608-594	3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	PLAIN	WI
2020-12-21	608-694	3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	COTTAGEGRV	WI
2020-12-07	608-860	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	LA CROSSE	WI
2020-04-13	608-686	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WI	225C	PORTAGE	WI
2020-03-05	608-806	0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	FAIRPLAY	WI
2019-08-02	608-605	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	KENDALL	WI
2019-05-09	608-600	0XXX3XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	CLINTON	WI
2019-05-09	608-680	0XXX2XXX3XXX4XXX6XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	BROOKLYN	WI
2018-11-21	608-590	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2018-07-24	608-597	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WI	225C	MCFARLAND	WI
2018-07-23	608-470	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WI	225C	EDGERTON	WI
2017-09-28	608-400	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2017-03-06	608-731	2XXX3XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	WEST SALEM	WI
2015-11-17	608-800	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2015-08-17	608-888	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2015-02-18	608-999	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2014-12-23	608-747	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 7 holders which blocks →	ONVOY, LLC - WI	225C	MAUSTON	WI
2008-09-15	608-721	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
2006-02-06	608-906	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
—	608-409	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	ARCADIA	WI
—	608-430	0XXX1XXX3XXX4XXX7XXX9XXX · 5 holders which blocks →	ONVOY, LLC - WI	225C	ETTRICK	WI
—	608-431	0XXX1XXX2XXX3XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	FOUNTAINCY	WI
—	608-504	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WI	225C	MADISON	WI
—	608-766	0–9 XXXall 10 · 8 holders which blocks →	ONVOY, LLC - WI	225C	ELROY	WI
—	608-768	not yet reported which blocks →	ONVOY, LLC - WI	225C	REEDSBURG	WI
—	608-841	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	MIDDLETON	WI

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.