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
2011-07-06	289-667	not yet reported which blocks →	Zayo Canada Inc.	8304	Hamilton	—
2011-07-06	385-259	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SALT LAKE	UT
2011-07-06	435-549	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	VERNAL	UT
2011-07-06	501-234	0–9 XXXall 10 · 3 holders which blocks →	WINDSTREAM COMMUNICATIONS, INC. - AR	7656	LITTLEROCK	AR
2011-07-06	585-371	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	ROCHESTER	NY
2011-07-06	623-335	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2011-07-06	647-255	not yet reported which blocks →	Zayo Canada Inc.	8304	Toronto	—
2011-07-06	705-300	not yet reported which blocks →	Iristel Inc.	154E	Barrie	—
2011-07-06	719-373	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	COLORDOSPG	CO
2011-07-06	778-458	not yet reported which blocks →	Bragg Communications Inc.	4878	Sechelt	—
2011-07-06	778-462	not yet reported which blocks →	Bragg Communications Inc.	4878	Gibsons	—
2011-07-06	778-487	not yet reported which blocks →	Bragg Communications Inc.	4878	Pender Harbour	—
2011-07-06	816-723	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	MO
2011-07-06	902-332	not yet reported which blocks →	Zayo Canada Inc.	8304	Halifax	—
2011-07-06	912-454	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	VIDALIA	GA
2011-07-05	260-739	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	FORT WAYNE	IN
2011-07-05	281-254	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	HOUSTON	TX
2011-07-05	470-334	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ADAIRSVL	GA
2011-07-05	475-235	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WATERBURY	CT
2011-07-05	478-302	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	WARNERRBNS	GA
2011-07-05	512-765	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AUSTIN	TX
2011-07-05	513-462	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CINCINNATI	OH
2011-07-05	647-739	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2011-07-05	647-740	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2011-07-05	647-741	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2011-07-05	647-760	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2011-07-05	647-761	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Toronto	—
2011-07-05	706-520	not yet reported which blocks →	WINDSTREAM GEORGIA, INC.	0357	COMMERCE	GA
2011-07-05	706-703	0–9 XXXall 10 · 7 holders which blocks →	METROPCS, INC.	5562	THOMSON	GA
2011-07-05	828-513	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	HENDERSNVL	NC
2011-07-05	856-434	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	MULLICA HL	NJ
2011-07-05	865-282	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL NASHVILLE LICENSES, INC.	7476	KNOXVILLE	TN
2011-07-05	907-414	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	WASILLA	AK
2011-07-05	940-333	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	CHILDRESS	TX
2011-07-01	210-749	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SANANTONIO	TX
2011-07-01	323-435	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 06	CA
2011-07-01	406-309	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	KALISPELL	MT
2011-07-01	406-616	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MT	453F	THREEFORKS	MT
2011-07-01	469-343	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MCKINNEY	TX
2011-07-01	480-541	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9636	PHOENIX	AZ
2011-07-01	512-815	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AUSTIN	TX
2011-07-01	682-232	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARLINGTON	TX
2011-07-01	702-749	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	LAS VEGAS	NV
2011-07-01	850-743	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	QUINCY	FL
2011-07-01	872-244	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHICGOZN07	IL
2011-07-01	872-395	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN10	IL
2011-07-01	952-977	0–9 XXXall 10 · 4 holders which blocks →	QWEST CORPORATION	9631	TWINCITIES	MN
2011-06-30	201-492	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	JERSEYCITY	NJ
2011-06-30	386-339	0–9 XXXall 10 · 4 holders which blocks →	WINDSTREAM FLORIDA, INC.	0336	LIVE OAK	FL
2011-06-30	443-894	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD

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.