Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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
2013-05-15	832-809	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	BARKER	TX
2013-05-15	848-205	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	METUCHEN	NJ
2013-05-15	939-709	0XXX1XXX · 2 holders which blocks →	NATURAL G.C. INC. - PR	985G	RIOPIEDRAS	PR
2013-05-15	954-716	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FTLAUDERDL	FL
2013-05-14	415-712	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BELVEDERE	CA
2013-05-14	510-671	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	OKLD ALMD	CA
2013-05-14	669-227	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNJS WEST	CA
2013-05-14	909-375	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BIGBEAR CY	CA
2013-05-13	313-725	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	DETROITZN1	MI
2013-05-13	404-960	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2013-05-13	571-699	0–9 XXXall 10 · 6 holders which blocks →	NUSO, LLC	551G	WSNGTNZN08	VA
2013-05-13	931-202	0–9 XXXall 10 · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	CROSSVILLE	TN
2013-05-10	226-818	not yet reported which blocks →	Mornington Communications Co-operative Ltd.	400E	Drayton	—
2013-05-10	240-802	0–9 XXXall 10 · 7 holders which blocks →	NUSO, LLC	551G	WSHNGTNZN2	MD
2013-05-10	431-282	not yet reported which blocks →	MTS Inc.	991B	Strathclair	—
2013-05-10	431-283	not yet reported which blocks →	MTS Inc.	991B	Riverton	—
2013-05-10	431-284	not yet reported which blocks →	MTS Inc.	991B	Manitou	—
2013-05-10	431-285	not yet reported which blocks →	MTS Inc.	991B	Gillam	—
2013-05-10	613-939	not yet reported which blocks →	Bell Canada	8051	Ottawa-Hull	—
2013-05-10	667-305	0–9 XXXall 10 · 5 holders which blocks →	NUSO, LLC	551G	PIKESVILLE	MD
2013-05-09	206-602	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	SEATTLE	WA
2013-05-09	432-703	0–9 XXXall 10 · 4 holders which blocks →	SOUTHWESTERN BELL	9533	ODESSA	TX
2013-05-09	614-980	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	COLUMBUS	OH
2013-05-09	708-831	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	CHICGOZN03	IL
2013-05-09	832-664	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX	7239	HSTNSUBURB	TX
2013-05-08	404-458	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	ATLANTA	GA
2013-05-08	480-878	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2013-05-08	484-934	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BETHLEHEM	PA
2013-05-08	506-989	not yet reported which blocks →	Fido Solutions Inc.	8820	Bathurst	—
2013-05-08	506-993	not yet reported which blocks →	Fido Solutions Inc.	8820	Miramichi	—
2013-05-08	506-995	not yet reported which blocks →	Fido Solutions Inc.	8820	Grand Falls	—
2013-05-08	662-932	0–9 XXXall 10 · 7 holders which blocks →	BRIGHTSPEED OF MISSISSIPPI, LLC	0458	OLIVE BRCH	MS
2013-05-08	717-883	0–9 XXXall 10 · 9 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	FRYSTOWN	PA
2013-05-08	720-478	0–9 XXXwhole prefix which blocks →	LEVEL 3 TELECOM OF COLORADO, LLC - CO	4574	DENVER	CO
2013-05-08	850-719	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	HAVANA	FL
2013-05-08	870-401	0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	WINDSTREAM COMMUNICATIONS, INC. - AR	7656	PINE BLUFF	AR
2013-05-08	873-825	not yet reported which blocks →	Cooptel	818D	Cookshire	—
2013-05-07	579-799	not yet reported which blocks →	Comwave Networks	160G	Longueuil	—
2013-05-07	779-229	6XXX which blocks →	COMCAST IP PHONE, LLC	318J	DEPUE	IL
2013-05-07	902-988	not yet reported which blocks →	Fido Solutions Inc.	8820	Yarmouth	—
2013-05-07	902-990	not yet reported which blocks →	Fido Solutions Inc.	8820	Bridgewater	—
2013-05-07	902-991	not yet reported which blocks →	Fido Solutions Inc.	8820	Amherst	—
2013-05-07	902-992	not yet reported which blocks →	Fido Solutions Inc.	8820	Summerside	—
2013-05-07	902-993	not yet reported which blocks →	Fido Solutions Inc.	8820	Kentville	—
2013-05-07	902-995	not yet reported which blocks →	Fido Solutions Inc.	8820	Antigonish	—
2013-05-07	903-703	0XXX3XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BLOSSOM	TX
2013-05-06	209-276	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ATWATER	CA
2013-05-06	213-293	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 01	CA
2013-05-06	252-748	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC	7555	ROCKYMOUNT	NC
2013-05-06	352-765	0–9 XXXall 10 · 6 holders which blocks →	BHN IP ENABLED SERVICES, LLC	045L	INVERNESS	FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.