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
2002-05-08	419-989	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	MANSFIELD	OH
2002-05-08	520-668	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	TUCSON	AZ
2002-05-08	606-359	0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	FRENCHBURG	KY
2002-05-08	617-304	none assigned yet which blocks →	METROPCS, INC.	5562	BOSTON	MA
2002-05-08	819-314	not yet reported which blocks →	Bell Mobility	6574	Drummondville	—
2002-05-08	909-953	4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	COLTON	CA
2002-05-08	937-565	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	BELLEFNTAN	OH
2002-05-08	979-257	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	EL CAMPO	TX
2002-05-07	217-718	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	SPRINGFLD	IL
2002-05-07	256-273	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	FORT PAYNE	AL
2002-05-07	256-677	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	GUNTERSVL	AL
2002-05-07	256-867	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AL	5255	ATHENS	AL
2002-05-07	309-740	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEORIA	IL
2002-05-07	360-761	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	BUCKLEY	WA
2002-05-07	361-227	6XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ALICE	TX
2002-05-07	403-542	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2002-05-07	418-981	not yet reported which blocks →	TELUS Quebec	8083	Saint-Apollinaire	—
2002-05-07	423-443	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	CHATTNOOGA	TN
2002-05-07	432-296	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	TERMINAL	TX
2002-05-07	450-712	not yet reported which blocks →	Bell Mobility	6574	St-Jerome	—
2002-05-07	478-288	1XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	MILLEDGEVL	GA
2002-05-07	509-590	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	SPOKANE	WA
2002-05-07	509-591	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	KENNEWICK	WA
2002-05-07	509-593	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	WALLAWALLA	WA
2002-05-07	509-594	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	YAKIMA	WA
2002-05-07	512-234	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	BURNET	TX
2002-05-07	514-770	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2002-05-07	515-269	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	METROPCS, INC.	5562	FORT DODGE	IA
2002-05-07	519-503	not yet reported which blocks →	Bell Mobility	6574	Kitchener-Waterloo	—
2002-05-07	573-557	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	ELDON	MO
2002-05-07	573-559	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	KENNETT	MO
2002-05-07	573-560	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	LOUISIANA	MO
2002-05-07	573-567	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	MEXICO	MO
2002-05-07	573-569	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	VERSAILLES	MO
2002-05-07	573-575	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	CARUTHRSVL	MO
2002-05-07	573-837	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	CAPEGIRARD	MO
2002-05-07	641-832	0–9 XXXall 10 · 5 holders which blocks →	OSAGE MUNICIPAL COMMUNICATIONS UTILITY - IA	9758	OSAGE	IA
2002-05-07	647-229	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2002-05-07	662-638	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	OXFORD	MS
2002-05-07	662-644	2XXX5XXX6XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	GREENWOOD	MS
2002-05-07	662-743	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	GREENVILLE	MS
2002-05-07	662-798	1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MS	5178	COLUMBUS	MS
2002-05-07	812-618	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	EVANSVILLE	IN
2002-05-07	812-619	0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	TELL CITY	IN
2002-05-07	819-609	not yet reported which blocks →	Bell Mobility	6574	Trois-Rivieres	—
2002-05-07	843-489	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BEAUFORT	SC
2002-05-07	902-572	not yet reported which blocks →	Bragg Communications Inc.	4878	Heatherton	—
2002-05-07	905-932	not yet reported which blocks →	Bell Mobility	6574	St. Catharines-Thorold	—
2002-05-07	913-971	0XXX1XXX4XXX · 2 holders which blocks →	SOUTHWESTERN BELL	9533	OLATHE	KS
2002-05-06	254-221	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	HILLSBORO	TX

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.