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
2022-03-09	251-384	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	MOBILE	AL
2022-03-09	251-388	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AL	604E	ATMORE	AL
2022-03-09	318-885	0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GEORGETOWN	LA
2022-03-09	318-920	0XXX1XXX3XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HEBRON	LA
2022-03-09	318-940	0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	IDA	LA
2022-03-09	318-960	0XXX1XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	JONESVILLE	LA
2022-03-09	318-989	0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ATHENS	LA
2022-03-09	445-245	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN39	PA
2022-03-09	464-345	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	LA GRANGE	IL
2022-03-09	464-529	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	CHICAGOHTS	IL
2022-03-09	475-356	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	BRIDGEPORT	CT
2022-03-09	484-830	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	CATASAUQUA	PA
2022-03-09	484-960	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	ALLENTOWN	PA
2022-03-09	484-981	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN10	PA
2022-03-09	513-963	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MIDDLETOWN	OH
2022-03-09	540-957	0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	ONVOY, LLC - VA	138E	BUENAVISTA	VA
2022-03-09	540-964	9XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	HARRISONBG	VA
2022-03-09	561-834	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	WPALMBEACH	FL
2022-03-09	561-836	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	WPALMBEACH	FL
2022-03-09	561-849	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BOCA RATON	FL
2022-03-09	564-220	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	CENTRALIA	WA
2022-03-09	567-382	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - OH	464C	VAN WERT	OH
2022-03-09	580-949	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ADA	OK
2022-03-09	620-696	0XXX1XXX6XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	STAFFORD	KS
2022-03-09	620-883	0XXX1XXX3XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	READING	KS
2022-03-09	620-997	0XXX2XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	SEVERY	KS
2022-03-09	661-570	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	BKFD SOUTH	CA
2022-03-09	667-743	0XXX1XXX7XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	QUEENSTOWN	MD
2022-03-09	681-314	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PRKRSBGZN3	WV
2022-03-09	681-428	0XXX7XXX8XXX9XXX · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	SPENCER	WV
2022-03-09	712-696	0XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DANBURY	IA
2022-03-09	725-281	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NV	587C	LAS VEGAS	NV
2022-03-09	757-791	0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - VA	079F	TEMPERNCVL	VA
2022-03-09	810-316	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BRIGHTON	MI
2022-03-09	810-776	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	FLINT	MI
2022-03-09	816-999	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	RICHMOND	MO
2022-03-09	862-398	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MORRISTOWN	NJ
2022-03-09	864-789	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	SENECA	SC
2022-03-09	872-342	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	CHICGOZN01	IL
2022-03-09	872-367	0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CHICGOZN04	IL
2022-03-09	872-842	0XXX1XXX2XXX5XXX6XXX · 3 holders which blocks →	FRACTEL, LLC	965H	CHICGOZN11	IL
2022-03-09	904-793	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	ST JOHNS	FL
2022-03-09	917-227	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2022-03-09	928-390	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	SOMERTON	AZ
2022-03-09	934-542	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BABYLON	NY
2022-03-09	937-955	0XXX1XXX2XXX5XXX7XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	GERMANTOWN	OH
2022-03-09	938-227	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HUNTSVILLE	AL
2022-03-09	938-646	0–9 XXXall 10 · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	RUSSELLVL	AL
2022-03-09	948-200	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	WHALEYVL	VA
2022-03-09	948-222	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	FRANKLIN	VA

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.