Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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. 38

NEW CINGULAR WIRELESS PCS, LLC - IL 28

ONVOY, LLC - CA 26

NEW CINGULAR WIRELESS PCS, LLC - DC 26

ONVOY, LLC - NJ 18

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
2011-03-01	862-621	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	BLOOMFIELD	NJ
2011-03-01	903-600	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	RICE	TX
2011-03-01	971-600	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	SALEM	OR
2011-03-01	971-800	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	MILL CITY	OR
2011-02-28	262-955	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	WAUKESHA	WI
2011-02-28	579-888	not yet reported which blocks →	TELUS Mobility	8303	St-Jerome	—
2011-02-28	587-253	not yet reported which blocks →	TELUS Mobility	8301	Medicine Hat	—
2011-02-28	705-462	not yet reported which blocks →	Bragg Communications Inc.	4878	Kirkland Lake	—
2011-02-28	705-469	not yet reported which blocks →	Bragg Communications Inc.	4878	Swastika	—
2011-02-28	902-213	not yet reported which blocks →	TELUS Mobility	8303	Charlottetown	—
2011-02-28	919-214	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	SILER CITY	NC
2011-02-25	201-464	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF NEW JERSEY, LLC - NJ	264F	HACKENSACK	NJ
2011-02-25	229-429	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MOULTRIE	GA
2011-02-25	267-428	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	PHLDLPHZN3	PA
2011-02-25	269-331	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	HASTINGS	MI
2011-02-25	347-807	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN08	NY
2011-02-25	347-883	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2011-02-25	360-836	0–9 XXXall 10 · 5 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7173	VANCOUVER	WA
2011-02-25	414-366	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	MILWAUKZN1	WI
2011-02-25	424-272	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7139	SNMN SNMN	CA
2011-02-25	504-800	0–9 XXXall 10 · 6 holders which blocks →	VOICESTREAM GSM I, LLC	150C	KENNER	LA
2011-02-25	513-568	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CINCINNATI	OH
2011-02-25	585-626	0–9 XXXall 10 · 5 holders which blocks →	FRONTIER TELEPHONE OF ROCHESTER, INC.	0121	WEBSTER	NY
2011-02-25	636-385	0–9 XXXall 10 · 6 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	OFALLON	MO
2011-02-25	732-813	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF NEW JERSEY, LLC - NJ	264F	FREEHOLD	NJ
2011-02-25	902-614	not yet reported which blocks →	Bragg Communications Inc.	421G	Amherst	—
2011-02-25	914-294	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	WSCHSTZN01	NY
2011-02-24	208-956	0XXX9XXX · 2 holders which blocks →	ONVOY, LLC - ID	689F	COERDALENE	ID
2011-02-24	269-332	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BENTON HBR	MI
2011-02-24	301-200	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MD	071F	INDIANHEAD	MD
2011-02-24	450-404	not yet reported which blocks →	Telecommunications Xittel Inc	247F	Joliette	—
2011-02-24	581-359	not yet reported which blocks →	TELUS Quebec	8083	Grande-Riviere	—
2011-02-24	581-360	not yet reported which blocks →	TELUS Quebec	8083	Gaspe	—
2011-02-24	581-361	not yet reported which blocks →	TELUS Quebec	8083	Chandler	—
2011-02-24	581-362	not yet reported which blocks →	TELUS Quebec	8083	Carleton	—
2011-02-24	581-363	not yet reported which blocks →	TELUS Quebec	8083	Caplan	—
2011-02-24	581-364	not yet reported which blocks →	TELUS Quebec	8083	Bonaventure	—
2011-02-24	581-365	not yet reported which blocks →	TELUS Quebec	8083	Barachois	—
2011-02-24	773-949	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN03	IL
2011-02-24	819-519	not yet reported which blocks →	Telecommunications Xittel Inc	247F	Trois-Rivieres	—
2011-02-24	985-500	0XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	METROPCS, INC.	5562	HAMMOND	LA
2011-02-23	317-628	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	INDIANAPLS	IN
2011-02-23	317-629	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	INDIANAPLS	IN
2011-02-23	513-888	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CINCINNATI	OH
2011-02-23	561-907	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	WPALMBEACH	FL
2011-02-23	581-351	not yet reported which blocks →	TELUS Quebec	8083	Port-Daniel	—
2011-02-23	581-352	not yet reported which blocks →	TELUS Quebec	8083	Pointe-a-la-Croix	—
2011-02-23	581-353	not yet reported which blocks →	TELUS Quebec	8083	Perce	—
2011-02-23	581-354	not yet reported which blocks →	TELUS Quebec	8083	Nouvelle	—
2011-02-23	581-355	not yet reported which blocks →	TELUS Quebec	8083	New Richmond	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.