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
2014-11-10	424-392	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	REDONDO	CA
2014-11-10	442-265	0–9 XXXwhole prefix which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	EL CENTRO	CA
2014-11-10	518-992	0–9 XXXall 10 · 5 holders which blocks →	AIRUS, INC. - NY	363H	ALBANY	NY
2014-11-10	636-535	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	FSSCRSTLCY	MO
2014-11-10	669-244	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SNJS WEST	CA
2014-11-10	716-427	0–9 XXXall 10 · 3 holders which blocks →	AIRUS, INC. - NY	363H	BUFFALO	NY
2014-11-10	720-899	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LONGMONT	CO
2014-11-10	813-580	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPAWST	FL
2014-11-10	901-608	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	MEMPHIS	TN
2014-11-10	909-662	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CHINO	CA
2014-11-10	925-379	0–9 XXXwhole prefix which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	PLEASANTON	CA
2014-11-10	939-881	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	TRUJILLOAL	PR
2014-11-10	980-474	0–9 XXXall 10 · 5 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	CHARLOTTE	NC
2014-11-08	715-496	2XXX5XXX6XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	STEVENS PT	WI
2014-11-07	208-981	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	POST FALLS	ID
2014-11-07	224-435	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GLENVIEW	IL
2014-11-07	231-787	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	WHITECLOUD	MI
2014-11-07	234-956	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	RITTMAN	OH
2014-11-07	267-367	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	PHLDLPHZN4	PA
2014-11-07	313-699	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN4	MI
2014-11-07	313-707	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN3	MI
2014-11-07	313-855	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN4	MI
2014-11-07	314-793	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LADUE	MO
2014-11-07	317-689	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 TELECOM OF INDIANA, LP - IN	7060	CARMEL	IN
2014-11-07	469-630	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LEWISVILLE	TX
2014-11-07	470-585	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2014-11-07	480-418	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2014-11-07	559-373	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	MADERA	CA
2014-11-07	570-989	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	MILTON	PA
2014-11-07	579-357	not yet reported which blocks →	Videotron Ltd.	8306	St-Gabriel-de-Brandon	—
2014-11-07	579-358	not yet reported which blocks →	Videotron Ltd.	8306	Berthierville	—
2014-11-07	581-315	not yet reported which blocks →	Videotron Ltd.	8306	Saint-Prosper-de-Dorchester	—
2014-11-07	639-488	not yet reported which blocks →	SaskTel Mobility	9868	Lampman	—
2014-11-07	717-962	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CARLISLE	PA
2014-11-07	747-231	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GLENDALE	CA
2014-11-07	782-234	not yet reported which blocks →	TELUS Mobility	8303	Halifax	—
2014-11-07	865-409	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL NASHVILLE LICENSES, INC.	7476	KNOXVILLE	TN
2014-11-07	867-457	not yet reported which blocks →	Iristel Inc.	154E	Whitehorse	—
2014-11-07	867-676	not yet reported which blocks →	Iristel Inc.	154E	Yellowknife	—
2014-11-07	878-271	0XXX1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BUTLER	PA
2014-11-07	971-331	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PORTLAND	OR
2014-11-06	224-727	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DEERFIELD	IL
2014-11-06	254-314	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TEMPLE	TX
2014-11-06	360-787	0–9 XXXall 10 · 6 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7173	VANCOUVER	WA
2014-11-06	541-797	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	BEND	OR
2014-11-06	571-585	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSNGTNZN19	VA
2014-11-06	626-295	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LA PUENTE	CA
2014-11-06	646-859	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN01	NY
2014-11-06	757-367	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWPTNWSZN3	VA
2014-11-06	970-517	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CO	026D	HTSLPHRSPG	CO

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.