Recent prefix assignments

358 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
2002-05-13	870-275	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	JONESBORO	AR
2002-05-13	870-455	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	NASHVILLE	AR
2002-05-13	870-663	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	PINE BLUFF	AR
2002-05-13	870-667	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	ASHDOWN	AR
2002-05-13	910-991	0XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	ELIZABTHTN	NC
2002-05-13	920-267	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	OSHKOSH	WI
2002-05-13	920-268	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	APPLETON	WI
2002-05-13	920-471	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	GREEN BAY	WI
2002-05-13	920-472	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	NEW LONDON	WI
2002-05-13	920-473	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	STURGEONBY	WI
2002-05-10	219-270	3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FBN INDIANA, INC. - IN	4117	DEMOTTE	IN
2002-05-10	219-964	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	RENSSELAER	IN
2002-05-10	260-994	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	AVILLA	IN
2002-05-10	574-263	1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	TIPPECANOE	IN
2002-05-10	574-306	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	WARSAW	IN
2002-05-10	574-907	4XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	MILLWOOD	IN
2002-05-10	601-494	2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks →	METROPCS, INC.	5562	WIGGINS	MS
2002-05-10	601-509	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	WAYNESBORO	MS
2002-05-10	601-519	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	JACKSON	MS
2002-05-10	601-547	not yet reported which blocks →	TELEPAK NETWORKS, INC. - MS	5278	PORTGIBSON	MS
2002-05-10	601-566	1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	METROPCS, INC.	5562	JACKSON	MS
2002-05-10	601-778	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	LAUREL	MS
2002-05-10	601-897	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	NATCHEZ	MS
2002-05-10	757-784	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WILLIAMSBG	VA
2002-05-10	843-494	5XXX6XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	CHARLESTON	SC
2002-05-10	864-764	1XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	SPARTANBG	SC
2002-05-09	405-588	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	CHANDLER	OK
2002-05-09	423-389	0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MIDWAY SUL	TN
2002-05-09	423-523	0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	BULLS GAP	TN
2002-05-09	434-509	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	LYNCHBURG	VA
2002-05-09	505-716	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	FARMINGTON	NM
2002-05-09	517-686	0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLCV - MI	543C	ALBION	MI
2002-05-09	540-904	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	ROANOKE	VA
2002-05-09	540-905	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	WARRENTON	VA
2002-05-09	540-907	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	FREDECKSBG	VA
2002-05-09	540-908	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	HARRISONBG	VA
2002-05-09	607-821	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	BINGHAMTON	NY
2002-05-09	620-765	0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	SOUTHWESTERN BELL	9533	GARDENCITY	KS
2002-05-09	803-669	5XXX6XXX7XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	CAMDEN	SC
2002-05-09	973-362	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	NEWTON	NJ
2002-05-09	989-492	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	METROPCS, INC.	5562	MIDLAND	MI
2002-05-08	248-731	1XXX7XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	BIRMINGHAM	MI
2002-05-08	248-835	0XXX1XXX2XXX3XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	TROY	MI
2002-05-08	320-322	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MN	5256	PINE CITY	MN
2002-05-08	330-439	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	WOOSTER	OH
2002-05-08	334-282	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	ELBA	AL
2002-05-08	339-368	4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	ARLINGTON	MA
2002-05-08	361-239	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	AT&T - LOCAL	7421	FLOURBLUFF	TX
2002-05-08	413-306	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	SPRINGFLD	MA
2002-05-08	419-516	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	LIMA	OH

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.