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
2014-10-07	720-900	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	DENVER	CO
2014-10-07	762-339	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ETC COMMUNICATIONS, L.L.C. - GA	205D	HOMER	GA
2014-10-07	872-267	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHICGOZN08	IL
2014-10-07	956-520	0–9 XXXall 10 · 3 holders which blocks →	STPCS JOINT VENTURE, LLC	4290	WESLACO	TX
2014-10-06	231-751	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	WALLOON LK	MI
2014-10-06	231-819	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	TUSTIN	MI
2014-10-06	269-448	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	BUCHANAN	MI
2014-10-06	269-520	0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	SCOTTS	MI
2014-10-06	269-855	0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	COLOMA	MI
2014-10-06	313-558	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	DETROITZN6	MI
2014-10-06	423-777	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TN	525E	CHATTNOOGA	TN
2014-10-06	458-203	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	ROGUERIVER	OR
2014-10-06	458-210	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	EUGENE	OR
2014-10-06	458-212	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	GRANTSPASS	OR
2014-10-06	512-710	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	AUSTIN	TX
2014-10-06	513-978	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	CINCINNATI	OH
2014-10-06	608-440	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	MADISON	WI
2014-10-06	616-404	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLCV - MI	543C	CASNOVIA	MI
2014-10-06	681-299	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WV	080F	FRANKFORD	WV
2014-10-06	785-596	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PAETEC ITEL, LLC	829J	TOPEKA	KS
2014-10-06	813-573	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPACEN	FL
2014-10-06	818-966	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNFN GRHL	CA
2014-10-06	843-800	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	MTPLEASANT	SC
2014-10-06	864-777	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC	098H	LIBERTY	SC
2014-10-06	872-281	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHICGOZN06	IL
2014-10-06	913-276	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BONNER SPG	KS
2014-10-06	913-293	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KANSASCITY	KS
2014-10-06	929-334	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN04	NY
2014-10-06	929-343	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN13	NY
2014-10-06	929-354	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN10	NY
2014-10-06	929-364	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN14	NY
2014-10-06	989-250	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	ATLANTA	MI
2014-10-06	989-299	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	FOWLERPWMO	MI
2014-10-06	989-487	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLCV - MI	543C	FARWELL	MI
2014-10-06	989-559	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	CASS CITY	MI
2014-10-03	207-536	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - ME	382D	PORTLAND	ME
2014-10-03	213-378	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	LSAN DA 10	CA
2014-10-03	239-900	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - FL	937C	FORT MYERS	FL
2014-10-03	248-607	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	ROYAL OAK	MI
2014-10-03	251-888	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AL	604E	MOBILE	AL
2014-10-03	267-787	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	PHLDLPHZN2	PA
2014-10-03	289-508	not yet reported which blocks →	ExaTEL Inc.	3147	Stouffville	—
2014-10-03	424-355	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	BEVERLYHLS	CA
2014-10-03	469-779	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DALLAS	TX
2014-10-03	475-288	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CT	4800	NORWALK	CT
2014-10-03	510-944	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	OKLD BKLY	CA
2014-10-03	551-235	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	JERSEYCITY	NJ
2014-10-03	573-533	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	CENTERTOWN	MO
2014-10-03	575-489	0–9 XXXall 10 · 7 holders which blocks →	METROPCS, INC.	5562	ALAMOGORDO	NM
2014-10-03	581-651	not yet reported which blocks →	Videotron Ltd.	8306	Girardville	—

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.