Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2005-05-25	813-270	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPA	FL
2005-05-25	857-221	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	BOSTON	MA
2005-05-25	864-889	not yet reported which blocks →	SOUTH CAROLINA NET, INC. - SC	1784	GREENWOOD	SC
2005-05-25	951-795	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	TEMECULA	CA
2005-05-24	239-745	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	FORT MYERS	FL
2005-05-24	571-291	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	LEESBURG	VA
2005-05-24	608-830	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
2005-05-24	636-344	0–9 XXXall 10 · 3 holders which blocks →	SOUTHWESTERN BELL	9533	HARVESTER	MO
2005-05-24	785-955	0–9 XXXall 10 · 8 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	BELLEVILLE	KS
2005-05-24	801-827	0–9 XXXall 10 · 2 holders which blocks →	QWEST CORPORATION	9636	OGDEN	UT
2005-05-24	806-990	not yet reported which blocks →	POKA LAMBRO TELEPHONE COMPANY	8661	POST	TX
2005-05-24	901-687	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ARLINGTON	TN
2005-05-24	956-567	0–9 XXXall 10 · 10 holders which blocks →	SMARTCOM TELEPHONE, LLC	4866	EDCOUCH	TX
2005-05-23	415-728	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNFC CNTRL	CA
2005-05-23	731-541	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	JACKSON	TN
2005-05-23	805-754	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OXNARD	CA
2005-05-23	856-807	0–9 XXXall 10 · 6 holders which blocks →	XTEL COMMUNICATIONS, INC.	854D	CAMDEN	NJ
2005-05-23	970-488	0–9 XXXall 10 · 4 holders which blocks →	QWEST CORPORATION	9636	FT COLLINS	CO
2005-05-21	417-939	0XXX2XXX3XXX7XXX9XXX · 4 holders which blocks →	MCC TELEPHONY LLC	593K	GREENFIELD	MO
2005-05-20	217-713	9XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL	7196	TAYLORVL	IL
2005-05-20	217-929	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL	7196	MATTOON	IL
2005-05-20	240-477	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	GAITHERSBG	MD
2005-05-20	404-418	0–9 XXXall 10 · 5 holders which blocks →	BROADRIVER COMMUNICATION CORPORATION	0172	ATLANTA	GA
2005-05-20	425-431	0–9 XXXwhole prefix which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7173	HALLS LAKE	WA
2005-05-20	443-855	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	ABERDEEN	MD
2005-05-20	480-388	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2005-05-20	780-640	not yet reported which blocks →	Bell West Inc.	2933	Sherwood Park	—
2005-05-20	814-515	0–9 XXXall 10 · 4 holders which blocks →	IDT AMERICA, CORP. - PA	213C	ALTOONA	PA
2005-05-19	202-420	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	WSHNGTNZN1	DC
2005-05-19	304-915	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WV	9944	CHRLSTNZN7	WV
2005-05-19	857-453	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	BOSTON	MA
2005-05-18	228-777	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS	6396	GULFPORT	MS
2005-05-18	254-383	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	KILLEEN	TX
2005-05-18	443-766	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	COLUMBIA	MD
2005-05-18	503-922	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PORTLAND	OR
2005-05-18	630-270	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	AURORA	IL
2005-05-18	662-730	0XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	RIPLEY	MS
2005-05-18	662-789	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS	6396	TUPELO	MS
2005-05-18	662-817	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MS	719E	NEW ALBANY	MS
2005-05-18	662-824	3XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS	4886	BOONEVILLE	MS
2005-05-18	662-977	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	POWERTEL MEMPHIS LICENSES, INC.	7474	CORINTH	MS
2005-05-18	732-375	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 9 holders which blocks →	COMCAST IP PHONE, LLC	318J	SEASIDE PK	NJ
2005-05-18	734-550	0–9 XXXall 10 · 9 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	WHITMORELK	MI
2005-05-18	806-422	0XXX1XXX2XXX4XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SPUR	TX
2005-05-17	347-301	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN04	NY
2005-05-17	347-302	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN04	NY
2005-05-17	418-206	not yet reported which blocks →	Videotron Ltd.	8306	Montmagny	—
2005-05-17	585-753	0–9 XXXwhole prefix which blocks →	FRONTIER TELEPHONE OF ROCHESTER, INC.	0121	ROCHESTER	NY
2005-05-17	813-777	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	TAMPA	FL
2005-05-17	902-846	not yet reported which blocks →	Aliant Telecom (PEI)	8087	Montague	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.