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
2014-06-10	867-787	not yet reported which blocks →	Bell Mobility	6574	Ulukhaktok	—
2014-06-10	867-788	not yet reported which blocks →	Bell Mobility	6574	Paulatuk	—
2014-06-10	867-789	not yet reported which blocks →	Bell Mobility	6574	Destruction Bay	—
2014-06-10	951-396	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ARLINGTON	CA
2014-06-09	210-751	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	SANANTONIO	TX
2014-06-09	281-771	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SPRING	TX
2014-06-09	661-470	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LANCASTER	CA
2014-06-09	774-434	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BROCKTON	MA
2014-06-09	908-274	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	PLAINFIELD	NJ
2014-06-09	949-558	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CAPITRNVLY	CA
2014-06-06	208-930	0–9 XXXall 10 · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	COERDALENE	ID
2014-06-06	323-746	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LSAN DA 13	CA
2014-06-06	507-601	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	551G	ROCHESTER	MN
2014-06-06	559-558	0–9 XXXall 10 · 7 holders which blocks →	NUSO, LLC	551G	FRESNO	CA
2014-06-06	581-457	not yet reported which blocks →	Videotron Ltd.	8306	Saint-Simon-de-Rimouski	—
2014-06-06	581-930	not yet reported which blocks →	Videotron Ltd.	8306	Saint-Basile	—
2014-06-06	587-392	not yet reported which blocks →	Shaw Telecom Inc.	497E	Calgary	—
2014-06-06	612-405	0–9 XXXall 10 · 2 holders which blocks →	NUSO, LLC	551G	TWINCITIES	MN
2014-06-06	832-269	0–9 XXXall 10 · 2 holders which blocks →	AT&T ENTERPRISES, LLC	516C	HOUSTON	TX
2014-06-06	915-260	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	EL PASO	TX
2014-06-06	929-276	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN06	NY
2014-06-05	470-349	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2014-06-05	579-860	not yet reported which blocks →	Fido Solutions Inc.	5643	Chateauguay	—
2014-06-05	579-862	not yet reported which blocks →	Fido Solutions Inc.	8820	St-Eustache	—
2014-06-05	579-863	not yet reported which blocks →	Fido Solutions Inc.	8820	Terrebonne	—
2014-06-05	579-864	not yet reported which blocks →	Fido Solutions Inc.	8820	Rawdon	—
2014-06-05	579-865	not yet reported which blocks →	Fido Solutions Inc.	8820	Lanoraie	—
2014-06-05	581-920	not yet reported which blocks →	Fido Solutions Inc.	8820	Levis	—
2014-06-05	602-899	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2014-06-05	786-577	0–9 XXXall 10 · 4 holders which blocks →	WIDE VOICE, LLC - FL	704G	MIAMI	FL
2014-06-05	813-577	0–9 XXXall 10 · 4 holders which blocks →	WIDE VOICE, LLC - FL	704G	TAMPACEN	FL
2014-06-05	813-815	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	ZEPHYRHILS	FL
2014-06-05	813-816	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	TAMPASTH	FL
2014-06-05	870-232	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	YELCOT VIDEO GROUP, INC. - AR	398H	MT HOME	AR
2014-06-05	956-443	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2014-06-04	431-220	not yet reported which blocks →	Bell West Inc.	2933	Dauphin	—
2014-06-04	431-221	not yet reported which blocks →	Bell West Inc.	2933	Neepawa	—
2014-06-04	431-223	not yet reported which blocks →	Bell West Inc.	2933	Stonewall	—
2014-06-04	431-224	not yet reported which blocks →	Bell West Inc.	2933	Thompson	—
2014-06-04	431-237	not yet reported which blocks →	Bell West Inc.	2933	Carman	—
2014-06-04	431-238	not yet reported which blocks →	Bell West Inc.	2933	Selkirk	—
2014-06-04	431-239	not yet reported which blocks →	Bell West Inc.	2933	The Pas	—
2014-06-04	431-240	not yet reported which blocks →	Bell West Inc.	2933	Winkler	—
2014-06-04	615-933	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	NASHVILLE	TN
2014-06-04	701-719	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - ND	452F	BELFIELD	ND
2014-06-04	928-318	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - AZ	630E	YUMA	AZ
2014-06-03	202-780	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 TELECOM OF D.C., LLC - DC	2801	WSHNGTNZN1	DC
2014-06-03	226-385	not yet reported which blocks →	Bell Mobility	6574	London	—
2014-06-03	226-751	not yet reported which blocks →	Bell Mobility	6574	Kitchener-Waterloo	—
2014-06-03	226-758	not yet reported which blocks →	Bell Mobility	6574	Windsor	—

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.