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
2002-06-21	812-786	3XXX4XXX5XXX6XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	NEW ALBANY	IN
2002-06-21	815-566	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	BELVIDERE	IL
2002-06-20	253-255	3XXX4XXX which blocks →	T-MOBILE USA, INC.	6529	TACOMA	WA
2002-06-20	256-278	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	ATHENS	AL
2002-06-20	256-280	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	DECATUR	AL
2002-06-20	256-418	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	FORT PAYNE	AL
2002-06-20	256-455	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	ALBERTVL	AL
2002-06-20	256-841	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	CULLMAN	AL
2002-06-20	334-246	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	AUBURN	AL
2002-06-20	360-774	2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PTTOWNSEND	WA
2002-06-20	360-775	2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PT ANGELES	WA
2002-06-20	414-248	4XXX5XXX7XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MILWAUKZN1	WI
2002-06-20	501-499	5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CONWAY	AR
2002-06-20	502-465	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CAMPBELSBG	KY
2002-06-20	502-466	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GHENT	KY
2002-06-20	502-467	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MILTON	KY
2002-06-20	502-662	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CARROLLTON	KY
2002-06-20	502-663	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BEDFORD	KY
2002-06-20	540-425	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BEDFORD	VA
2002-06-20	608-628	5XXX7XXX8XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MADISON	WI
2002-06-20	646-372	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
2002-06-20	862-755	none assigned yet which blocks →	METROPCS, INC.	5562	NEWARK	NJ
2002-06-20	910-536	1XXX which blocks →	SUNCOM DBA T-MOBILE USA	8645	LUMBERTON	NC
2002-06-20	910-538	not yet reported which blocks →	SUNCOM DBA T-MOBILE USA	8645	WILMINGTON	NC
2002-06-20	910-539	0XXX which blocks →	SUNCOM DBA T-MOBILE USA	8645	JACKSONVL	NC
2002-06-20	914-424	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	WSCHSTZN08	NY
2002-06-20	919-396	5XXX6XXX9XXX · 2 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	GOLDSBORO	NC
2002-06-20	973-280	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	ORANGE	NJ
2002-06-19	208-806	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - ID	7558	KETCHUM	ID
2002-06-19	219-916	2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	VALPARAISO	IN
2002-06-19	224-715	not yet reported which blocks →	T-MOBILE USA, INC.	6529	LIBERTYVL	IL
2002-06-19	252-557	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NC	3235	ROCKYMOUNT	NC
2002-06-19	252-558	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NC	3235	GREENVILLE	NC
2002-06-19	252-661	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NC	3235	WILLIAMSTN	NC
2002-06-19	270-632	1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - KY	4369	HOPKINSVL	KY
2002-06-19	270-872	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - KY	4369	ELIZABTHTN	KY
2002-06-19	325-206	4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SONORA	TX
2002-06-19	325-207	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SNYDER	TX
2002-06-19	406-545	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	BILLINGS	MT
2002-06-19	406-551	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	BOZEMAN	MT
2002-06-19	406-552	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	MISSOULA	MT
2002-06-19	406-558	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	HELENA	MT
2002-06-19	406-564	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	GREATFALLS	MT
2002-06-19	406-565	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MT	9415	BUTTE	MT
2002-06-19	432-208	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	ODESSA	TX
2002-06-19	432-209	7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SEMINOLE	TX
2002-06-19	432-213	6XXX7XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	BIG SPRING	TX
2002-06-19	479-381	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROGERS	AR
2002-06-19	501-242	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	MORRILTON	AR
2002-06-19	517-594	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks →	ACD TELECOM, INC. - MI	3535	OSSEO	MI

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.