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
2005-03-18	418-978	not yet reported which blocks →	Videotron Ltd.	8306	Chateau-Richer	—
2005-03-18	450-495	not yet reported which blocks →	Bell Mobility	6574	Lachute	—
2005-03-18	516-710	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN09	NY
2005-03-18	606-375	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	MAYSVILLE	KY
2005-03-18	702-425	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NV	4805	LAS VEGAS	NV
2005-03-18	781-918	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TC SYSTEMS, INC.	7135	LEXINGTON	MA
2005-03-18	801-663	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	KAYSVILLE	UT
2005-03-18	819-746	not yet reported which blocks →	Videotron Ltd.	8306	Magog	—
2005-03-18	819-926	not yet reported which blocks →	Videotron Ltd.	8306	Coaticook	—
2005-03-18	845-857	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NEWBURGH	NY
2005-03-18	856-617	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	HADDON HTS	NJ
2005-03-18	902-375	not yet reported which blocks →	Bragg Communications Inc.	4878	Berwick	—
2005-03-18	989-266	0–9 XXXall 10 · 7 holders which blocks →	PAETEC ITEL, LLC	829J	AUBURN	MI
2005-03-18	989-373	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	OWENDALE	MI
2005-03-18	989-442	0–9 XXXall 10 · 7 holders which blocks →	PAETEC ITEL, LLC	829J	COLEMAN	MI
2005-03-18	989-850	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	GAGETOWN	MI
2005-03-17	214-404	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2005-03-17	214-517	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2005-03-17	214-717	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2005-03-17	214-934	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2005-03-17	501-366	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	LITTLEROCK	AR
2005-03-17	540-604	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	FREDECKSBG	VA
2005-03-17	785-643	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	SALINA	KS
2005-03-17	815-677	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DIXON	IL
2005-03-17	870-632	0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAKE VLG	AR
2005-03-17	903-701	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TEXARKANA	TX
2005-03-17	954-636	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FTLAUDERDL	FL
2005-03-16	219-488	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	CROWNPOINT	IN
2005-03-16	252-886	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC	7835	ROCKYMOUNT	NC
2005-03-16	254-543	not yet reported which blocks →	GLOBALSTAR USA, INC.	3685	WACO	TX
2005-03-16	360-872	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	ORTING	WA
2005-03-16	360-881	0XXX1XXX6XXX7XXX8XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	KINGSTON	WA
2005-03-16	360-889	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	SO PRAIRIE	WA
2005-03-16	417-650	2XXX4XXX5XXX6XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	LEBANON	MO
2005-03-16	425-292	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	NORTH BEND	WA
2005-03-16	425-549	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	CARNATION	WA
2005-03-16	516-858	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NASSAUZN01	NY
2005-03-16	517-233	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	EATON RPD	MI
2005-03-16	517-345	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	DIMONDALE	MI
2005-03-16	517-444	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	CHARLOTTE	MI
2005-03-16	561-584	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	WPALMBEACH	FL
2005-03-16	561-847	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	WPALMBEACH	FL
2005-03-16	571-252	0–9 XXXall 10 · 4 holders which blocks →	VERIZON VIRGINIA, INC.	9213	LEESBURG	VA
2005-03-16	774-402	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	SOUTHBDG	MA
2005-03-16	845-787	0–9 XXXall 10 · 7 holders which blocks →	METROPCS, INC.	5562	NEWBURGH	NY
2005-03-16	903-440	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SULPHURSPG	TX
2005-03-16	903-519	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	CORSICANA	TX
2005-03-16	909-537	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	MARSHALL	CA
2005-03-16	973-474	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NEWARK	NJ
2005-03-16	973-970	0–9 XXXall 10 · 8 holders which blocks →	PAETEC ITEL, LLC	829J	SUCCASUNNA	NJ

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.