Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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, last 30 days

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 28

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 23

ONVOY, LLC - CA 19

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
2021-01-07	838-380	0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	LAKEGEORGE	NY
2021-01-07	838-381	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	LAKEPLACID	NY
2021-01-07	838-385	0XXX1XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MINEVILLE	NY
2021-01-07	838-387	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MOIRA	NY
2021-01-07	838-882	1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	OAK HILL	NY
2021-01-07	838-884	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PITTSTOWN	NY
2021-01-07	906-301	0XXX2XXX3XXX4XXX7XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	MICHIGAMME	MI
2021-01-06	220-272	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	CROTON	OH
2021-01-06	220-440	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	FRAZEYSBG	OH
2021-01-06	251-337	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - AL	604E	REPTON	AL
2021-01-06	251-347	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AL	604E	URIAH	AL
2021-01-06	252-483	0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	SUNBURY	NC
2021-01-06	380-280	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	GROVEPORT	OH
2021-01-06	463-248	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NOBLESVL	IN
2021-01-06	548-257	not yet reported which blocks →	Fibernetics Corporation	464D	Comber	—
2021-01-06	548-258	not yet reported which blocks →	Fibernetics Corporation	464D	Stoney Point	—
2021-01-06	548-259	not yet reported which blocks →	Fibernetics Corporation	464D	Woodslee	—
2021-01-06	548-260	not yet reported which blocks →	Fibernetics Corporation	464D	Emeryville	—
2021-01-06	548-261	not yet reported which blocks →	Fibernetics Corporation	464D	Pleasant Park	—
2021-01-06	548-262	not yet reported which blocks →	Fibernetics Corporation	464D	Harrow	—
2021-01-06	548-263	not yet reported which blocks →	Fibernetics Corporation	464D	La Salle	—
2021-01-06	548-264	not yet reported which blocks →	Fibernetics Corporation	464D	Maidstone	—
2021-01-06	548-265	not yet reported which blocks →	Fibernetics Corporation	464D	McGregor	—
2021-01-06	548-266	not yet reported which blocks →	Fibernetics Corporation	464D	Pelee Island	—
2021-01-06	548-267	not yet reported which blocks →	Fibernetics Corporation	464D	Wheatley	—
2021-01-06	574-368	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ELKHART	IN
2021-01-06	585-788	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	VICTOR	NY
2021-01-06	586-355	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	RICHMOND	MI
2021-01-06	586-544	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	UTICA	MI
2021-01-06	639-593	not yet reported which blocks →	Fibernetics Corporation	464D	Outlook	—
2021-01-06	639-594	not yet reported which blocks →	Fibernetics Corporation	464D	Watrous	—
2021-01-06	639-595	not yet reported which blocks →	Fibernetics Corporation	464D	Fort Qu'Appelle	—
2021-01-06	639-596	not yet reported which blocks →	Fibernetics Corporation	464D	Lumsden	—
2021-01-06	659-217	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AL	604E	W BLOCTON	AL
2021-01-06	659-226	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - AL	604E	CLANTON	AL
2021-01-06	659-246	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AL	604E	GARDENDALE	AL
2021-01-06	659-266	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - AL	604E	MONTEVALLO	AL
2021-01-06	659-276	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - AL	604E	PARRISH	AL
2021-01-06	720-821	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CO	026D	LONGMONT	CO
2021-01-06	734-704	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLCV - MI	543C	MANCHESTER	MI
2021-01-06	803-930	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	CHPNLTLMTS	SC
2021-01-06	838-231	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	COLONIE	NY
2021-01-06	838-830	0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	ESPERANCE	NY
2021-01-06	838-831	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	ELIZABTHTN	NY
2021-01-06	838-832	1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	DANNEMORA	NY
2021-01-06	838-834	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	CLARKSVL	NY
2021-01-06	838-835	1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	CHATEAUGAY	NY
2021-01-06	838-836	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC- NY	384C	CATSKILL	NY
2021-01-06	854-228	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - SC	548E	CHERAW	SC
2021-01-06	854-230	0XXX1XXX2XXX3XXX4XXX8XXX · 3 holders which blocks →	ONVOY, LLC - SC	548E	OLANTA	SC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.