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
2014-06-13	506-985	not yet reported which blocks →	TELUS Integrated Communications	2782	Miramichi	—
2014-06-13	586-223	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2014-06-13	605-572	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD	6569	ARMOUR	SD
2014-06-13	605-851	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD	6569	HOWARD	SD
2014-06-13	619-485	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	HARBSNALPN	CA
2014-06-13	639-316	not yet reported which blocks →	SaskTel Mobility	9868	Regina	—
2014-06-13	639-317	not yet reported which blocks →	SaskTel Mobility	9868	Saskatoon	—
2014-06-13	765-508	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ELWOOD	IN
2014-06-13	765-636	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	VEEDERSBG	IN
2014-06-13	803-681	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	SHARON	SC
2014-06-13	818-940	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	BRBN BRBN	CA
2014-06-13	909-492	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	MENTONE	CA
2014-06-13	910-745	0–9 XXXall 10 · 6 holders which blocks →	RANDOLPH TELEPHONE TELECOMMUNICATIONS, INC. - NC	757D	FAYETTEVL	NC
2014-06-12	252-397	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	TRENTON	NC
2014-06-12	505-322	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ALBUQURQUE	NM
2014-06-12	614-845	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	REYNOLDSBG	OH
2014-06-12	720-471	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2014-06-12	720-526	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LONGMONT	CO
2014-06-12	725-244	0–9 XXXall 10 · 3 holders which blocks →	CENTRAL TEL. CO. - NEVADA DBA CENTURYLINK	2348	LAS VEGAS	NV
2014-06-12	765-410	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	PARAGON	IN
2014-06-12	914-915	0–9 XXXall 10 · 4 holders which blocks →	BARR TELL USA, INC. - NY	525G	WSCHSTZN08	NY
2014-06-12	971-708	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	BEAVERTON	OR
2014-06-11	206-556	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SEATTLE	WA
2014-06-11	219-401	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	CEDAR LAKE	IN
2014-06-11	224-385	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	BARRINGTON	IL
2014-06-11	224-713	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ALGONQUIN	IL
2014-06-11	224-817	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ALGONQUIN	IL
2014-06-11	337-541	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LAFAYETTE	LA
2014-06-11	608-818	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MONTELLO	WI
2014-06-11	779-240	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	KANKAKEE	IL
2014-06-11	779-301	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	KANKAKEE	IL
2014-06-11	779-702	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	JOLIET	IL
2014-06-11	863-777	0–9 XXXall 10 · 5 holders which blocks →	TERRA NOVA TELECOM, INC. - FL	382G	LAKELAND	FL
2014-06-11	904-570	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2014-06-11	912-417	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SAVANNAH	GA
2014-06-10	202-792	0–9 XXXall 10 · 2 holders which blocks →	ATLANTECH ONLINE, INC. - DC	513G	WSHNGTNZN1	DC
2014-06-10	305-563	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	KEYS	FL
2014-06-10	413-930	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	SPRINGFLD	MA
2014-06-10	442-235	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	BARSTOW	CA
2014-06-10	619-386	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CHULAVISTA	CA
2014-06-10	639-480	not yet reported which blocks →	SaskTel Mobility	9868	Saskatoon	—
2014-06-10	639-590	not yet reported which blocks →	SaskTel Mobility	9868	Regina	—
2014-06-10	709-327	not yet reported which blocks →	Bell Mobility Aliant	329A	St. John's	—
2014-06-10	727-309	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	CLEARWATER	FL
2014-06-10	786-570	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2014-06-10	804-293	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BETHIA	VA
2014-06-10	804-331	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	CHARLES CY	VA
2014-06-10	857-930	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BOSTON	MA
2014-06-10	867-785	not yet reported which blocks →	Bell Mobility	6574	Lutsel K'e	—
2014-06-10	867-786	not yet reported which blocks →	Bell Mobility	6574	Sachs Harbour	—

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.