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
2002-07-02	443-912	0–9 XXXall 10 · 3 holders which blocks →	CORE COMMUNICATIONS, INC.- MD	2593	TOWSON	MD
2002-07-02	443-945	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELKTON	MD
2002-07-02	443-983	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2002-07-02	502-290	not yet reported which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LOUISVILLE	KY
2002-07-01	254-261	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	STRAWN	TX
2002-06-29	580-235	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	SOUTHWESTERN BELL	9533	ADA	OK
2002-06-28	205-255	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	DORA	AL
2002-06-28	307-575	7XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY	6566	TORRINGTON	WY
2002-06-28	440-321	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	E CLARIDON	OH
2002-06-28	440-361	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GENEVA	OH
2002-06-28	567-224	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	WILLARD	OH
2002-06-28	712-238	not yet reported which blocks →	LONG LINES METRO, INC. - IA	828B	SIOUX CITY	IA
2002-06-28	819-934	not yet reported which blocks →	Bell Canada	8050	Ottawa-Hull	—
2002-06-28	832-605	not yet reported which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2002-06-28	832-606	not yet reported which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2002-06-28	832-607	not yet reported which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2002-06-27	224-643	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 7 holders which blocks →	ILLINOIS BELL TEL CO	9329	LAKE VILLA	IL
2002-06-27	251-223	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	FOLEY	AL
2002-06-27	260-223	5XXX6XXX7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	DECATUR	IN
2002-06-27	260-224	6XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	HUNTINGTON	IN
2002-06-27	260-225	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	WABASH	IN
2002-06-27	260-251	3XXX4XXX5XXX6XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	PORTLAND	IN
2002-06-27	330-240	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WARREN	OH
2002-06-27	330-469	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	WARREN	OH
2002-06-27	334-414	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MONTGOMERY	AL
2002-06-27	409-330	4XXX5XXX7XXX8XXX · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	ORANGE	TX
2002-06-27	480-577	not yet reported which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2002-06-27	508-603	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	UPTON	MA
2002-06-27	541-203	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OR	3234	STATELINE	OR
2002-06-27	567-202	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	TOLEDO	OH
2002-06-27	717-494	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	MARION	PA
2002-06-27	719-369	0XXX1XXX2XXX3XXX4XXX5XXX6XXX which blocks →	T-MOBILE USA, INC.	6529	PUEBLO	CO
2002-06-27	812-202	3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	BOONVILLE	IN
2002-06-27	812-270	3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	NEWHARMONY	IN
2002-06-27	908-966	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	ELIZABETH	NJ
2002-06-27	918-919	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	MIAMI	OK
2002-06-26	213-825	not yet reported which blocks →	SHELCOMM	0051	LSAN DA 01	CA
2002-06-26	215-550	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	YMAX COMMUNICATIONS CORP. - PA	283E	NEWTOWN	PA
2002-06-26	219-380	0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks →	METROPCS, INC.	5562	LA PORTE	IN
2002-06-26	260-212	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	COLUMBIACY	IN
2002-06-26	270-293	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MURRAY	KY
2002-06-26	270-703	5XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BENTON	KY
2002-06-26	270-704	3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MARION	KY
2002-06-26	270-705	8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MAYFIELD	KY
2002-06-26	270-847	2XXX3XXX4XXX6XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	RUSSELLVL	KY
2002-06-26	270-943	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	SCOTTSVL	KY
2002-06-26	270-945	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	IRVINGTON	KY
2002-06-26	281-305	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	PINEHURST	TX
2002-06-26	281-306	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	SPLENDORA	TX
2002-06-26	330-440	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	NEWPHLDLPH	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.