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
2012-08-17	919-964	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	CREEDMOOR	NC
2012-08-17	949-237	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	IRVINE	CA
2012-08-16	470-232	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ADAIRSVL	GA
2012-08-16	470-252	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	GAINESVL	GA
2012-08-16	516-580	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NASSAUZN05	NY
2012-08-16	614-813	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	COLUMBUS	OH
2012-08-16	646-634	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2012-08-16	720-355	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2012-08-16	857-285	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	CAMBRIDGE	MA
2012-08-16	864-509	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	GREENVILLE	SC
2012-08-16	917-588	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN07	NY
2012-08-16	917-960	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN06	NY
2012-08-16	925-464	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WALNUT CRK	CA
2012-08-15	312-620	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	CHICGOZN01	IL
2012-08-15	435-339	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	BRIGHAM CY	UT
2012-08-15	502-559	0–9 XXXwhole prefix which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	LOUISVILLE	KY
2012-08-15	715-725	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PLTC, LLC - WI	375F	CECIL	WI
2012-08-15	815-201	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	SHERIDAN	IL
2012-08-15	832-406	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HSTNSUBURB	TX
2012-08-15	832-716	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2012-08-14	218-877	0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MN	184D	GRANDMRAIS	MN
2012-08-14	226-379	not yet reported which blocks →	Bell Mobility	6574	Owen Sound	—
2012-08-14	310-879	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CMTN GRDN	CA
2012-08-14	450-363	not yet reported which blocks →	Zayo Canada Inc.	8304	Boucherville	—
2012-08-14	450-457	not yet reported which blocks →	Zayo Canada Inc.	8304	St-Bruno	—
2012-08-14	579-274	not yet reported which blocks →	Zayo Canada Inc.	8304	Longueuil	—
2012-08-14	579-275	not yet reported which blocks →	Zayo Canada Inc.	8304	Ste-Therese	—
2012-08-14	604-342	not yet reported which blocks →	Zayo Canada Inc.	8304	Port Coquitlam	—
2012-08-14	786-508	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	NORTH DADE	FL
2012-08-14	954-507	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	CORAL SPG	FL
2012-08-13	305-203	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	KEYS	FL
2012-08-13	310-299	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	BEVERLYHLS	CA
2012-08-13	310-730	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CULVERCITY	CA
2012-08-13	323-480	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MONTEBELLO	CA
2012-08-13	336-582	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	WINSTN SAL	NC
2012-08-13	404-490	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2012-08-13	415-697	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNFC CNTRL	CA
2012-08-13	470-205	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	COVINGTON	GA
2012-08-13	480-737	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2012-08-13	520-422	0–9 XXXall 10 · 5 holders which blocks →	AT&T - LOCAL	7421	BISBEE	AZ
2012-08-13	561-303	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	DELRAY BCH	FL
2012-08-13	571-398	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	OCCOQUAN	VA
2012-08-13	707-724	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	VACAVILLE	CA
2012-08-13	774-308	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MARLBORO	MA
2012-08-13	864-401	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	ANDERSON	SC
2012-08-13	949-381	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	IRVINE	CA
2012-08-13	971-281	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OR	750E	NEWBERG	OR
2012-08-10	224-256	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ALGONQUIN	IL
2012-08-10	440-407	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CHAGRINFLS	OH
2012-08-10	601-541	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL MEMPHIS LICENSES, INC.	7474	FOREST	MS

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.