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 641

ONVOY, LLC - IA 22

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
2024-03-14	641-560	0XXX1XXX2XXX4XXX8XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	FAIRFIELD	IA
2024-03-12	641-513	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	MASON CITY	IA
2024-03-08	641-310	0XXX1XXX2XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	MARSHALLTN	IA
2021-12-08	641-341	4XXX which blocks →	ONVOY, LLC - IA	221F	THORNTON	IA
2019-11-05	641-400	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	HUMESTON	IA
2019-11-05	641-448	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	MELCHER	IA
2019-08-29	641-334	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IA	221F	ROSE HILL	IA
2018-11-07	641-609	3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	ALEXANDER	IA
2018-10-25	641-401	1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - IA	221F	SWALEDALE	IA
2018-10-25	641-406	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	MESERVEY	IA
2018-10-25	641-614	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - IA	221F	SHARPSBURG	IA
2018-10-25	641-646	3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	ROWAN	IA
2018-10-25	641-671	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IA	221F	LENOX	IA
2018-10-25	641-681	2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - IA	221F	GOODELL	IA
2018-02-16	641-800	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - IA	221F	ACKLEY	IA
2018-02-16	641-999	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - IA	221F	NASHUA	IA
2017-12-06	641-666	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	ONVOY, LLC - IA	221F	OSAGE	IA
2005-05-13	641-715	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - IA	221F	CHARLES CY	IA
2005-02-01	641-316	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IA	221F	IOWA FALLS	IA
—	641-238	0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	GENEVA	IA
—	641-503	0XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks →	ONVOY, LLC - IA	221F	MOUNT AYR	IA
—	641-717	1XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	ONVOY, LLC - IA	221F	COULTER	IA

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.