Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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
2021-05-06	346-468	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	TOMBALL	TX
2021-05-06	346-470	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	HUMBLE	TX
2021-05-06	406-608	0–9 XXXall 10 · 3 holders which blocks →	IP HORIZON LLC	515J	BILLINGS	MT
2021-05-06	432-322	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	FRANKEL CY	TX
2021-05-06	432-433	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	MCCAMEY	TX
2021-05-06	432-588	0XXX5XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	STANTON	TX
2021-05-06	432-799	0XXX2XXX6XXX7XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BALMORHEA	TX
2021-05-06	432-899	0XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	FORT DAVIS	TX
2021-05-06	432-966	0XXX2XXX5XXX6XXX7XXX · 3 holders which blocks →	FRACTEL, LLC	965H	COYANOSA	TX
2021-05-06	507-808	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	ONVOY, LLC - MN	184D	PRESTON	MN
2021-05-06	531-267	0–9 XXXall 10 · 4 holders which blocks →	IP HORIZON LLC	515J	OMAHA	NE
2021-05-06	548-252	not yet reported which blocks →	ISP Telecom Inc.	4727	Emeryville	—
2021-05-06	575-260	0XXX1XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	RUIDOSODWN	NM
2021-05-06	629-257	0–9 XXXall 10 · 3 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	NASHVILLE	TN
2021-05-06	681-466	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CHRLSTNZN2	WV
2021-05-06	681-488	0XXX4XXX5XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BRADSHAW	WV
2021-05-06	681-686	2XXX6XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	DUTCHRIDGE	WV
2021-05-06	682-699	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	ARLINGTON	TX
2021-05-06	682-799	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	ACTON	TX
2021-05-06	754-266	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	DEERFLDBCH	FL
2021-05-06	769-837	0XXX1XXX2XXX4XXX5XXX7XXX9XXX · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PELAHATCHI	MS
2021-05-06	774-475	0XXX1XXX5XXX7XXX8XXX · 3 holders which blocks →	VONAGE AMERICA LLC	197D	MARLBORO	MA
2021-05-06	828-663	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	TELNYX LLC	073H	TAYLORSVL	NC
2021-05-06	838-322	3XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SHARON SPG	NY
2021-05-06	838-328	3XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PUTNAM	NY
2021-05-06	838-440	1XXX2XXX4XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	WHITEHALL	NY
2021-05-06	838-878	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SALEM	NY
2021-05-06	947-895	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	SOUTHFIELD	MI
2021-05-05	251-354	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	GROVE HILL	AL
2021-05-05	314-850	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LADUE	MO
2021-05-05	334-812	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	TALLASSEE	AL
2021-05-05	346-467	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	RICHMNRNBG	TX
2021-05-05	434-279	0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	GLADYS	VA
2021-05-05	434-744	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BACHESHALL	VA
2021-05-05	434-884	0XXX2XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GLADYS	VA
2021-05-05	438-224	not yet reported which blocks →	IXICA Communications Inc.	812H	Montreal	—
2021-05-05	438-424	not yet reported which blocks →	IXICA Communications Inc.	812H	Montreal	—
2021-05-05	438-447	not yet reported which blocks →	IXICA Communications Inc.	812H	Pointe-Claire	—
2021-05-05	438-608	not yet reported which blocks →	IXICA Communications Inc.	812H	Ste-Genevieve	—
2021-05-05	438-644	not yet reported which blocks →	IXICA Communications Inc.	812H	Montreal	—
2021-05-05	438-677	not yet reported which blocks →	IXICA Communications Inc.	812H	Roxboro	—
2021-05-05	484-914	0XXX6XXX7XXX8XXX · 3 holders which blocks →	TELNYX LLC	073H	KEMPTON	PA
2021-05-05	502-885	0–9 XXXall 10 · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	LOUISVILLE	KY
2021-05-05	540-807	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	LOUISA	VA
2021-05-05	551-318	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	BAYONNE	NJ
2021-05-05	581-895	not yet reported which blocks →	Iristel Inc.	154E	Riviere-du-Loup	—
2021-05-05	582-998	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BELLWOOD	PA
2021-05-05	660-306	3XXX6XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	MEADVILLE	MO
2021-05-05	667-319	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CHESTERTN	MD
2021-05-05	667-320	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.