Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
2016-07-21	440-907	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	VICTORY	OH
2016-07-21	539-201	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	WINDSTREAM OKLAHOMA, INC.	1965	KIOWA	OK
2016-07-21	587-623	not yet reported which blocks →	TELUS	8084	Calgary	—
2016-07-21	782-421	not yet reported which blocks →	Bragg Communications Inc.	4878	Iona	—
2016-07-21	782-442	not yet reported which blocks →	Bragg Communications Inc.	4878	Boisdale	—
2016-07-21	782-443	not yet reported which blocks →	Bragg Communications Inc.	4878	Whycocomagh	—
2016-07-21	782-464	not yet reported which blocks →	Bragg Communications Inc.	4878	Grand Narrows	—
2016-07-21	782-465	not yet reported which blocks →	Bragg Communications Inc.	4878	Baddeck	—
2016-07-21	867-458	not yet reported which blocks →	Ice Wireless Inc.	630G	Whitehorse	—
2016-07-21	867-795	not yet reported which blocks →	Ice Wireless Inc.	630G	Iqaluit	—
2016-07-21	872-769	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	CHICGOZN06	IL
2016-07-21	972-817	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL TELEPHONE COMPANY - TX	7726	IRVING	TX
2016-07-20	360-559	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	CENTRALIA	WA
2016-07-20	709-784	not yet reported which blocks →	Aliant Telecom (NF)	8085	Corner Brook	—
2016-07-20	913-289	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	OLATHE	KS
2016-07-20	913-335	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	KANSASCITY	KS
2016-07-20	984-224	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	WENDELL	NC
2016-07-19	209-719	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	RIVERBANK	CA
2016-07-19	210-642	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SANANTONIO	TX
2016-07-19	256-800	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	ATHENS	AL
2016-07-19	385-256	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - UT	117F	SALT LAKE	UT
2016-07-19	579-474	not yet reported which blocks →	ISP Telecom Inc.	4727	Le Gardeur	—
2016-07-19	609-622	0–9 XXXall 10 · 6 holders which blocks →	BARR TELL USA, INC. - NJ	917G	BARNEGAT	NJ
2016-07-19	609-684	0–9 XXXall 10 · 3 holders which blocks →	BUSINESS AUTOMATION TECHNOLOGIES, INC. - NJ	852B	PLEASANTVL	NJ
2016-07-19	612-757	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TWINCITIES	MN
2016-07-19	628-247	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNFC CNTRL	CA
2016-07-19	628-248	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7145	SNFC MT-EV	CA
2016-07-19	747-214	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NO HOLLYWD	CA
2016-07-19	786-769	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MIAMI	FL
2016-07-19	786-828	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MIAMI	FL
2016-07-19	873-475	not yet reported which blocks →	ISP Telecom Inc.	4727	Rouyn-Noranda	—
2016-07-19	909-756	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	S BERNDINO	CA
2016-07-19	918-972	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DEWEY	OK
2016-07-19	951-478	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MORENO	CA
2016-07-18	205-990	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	CLANTON	AL
2016-07-18	224-762	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	ELGIN	IL
2016-07-18	234-263	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	OHIO BELL TEL CO	9321	KENT	OH
2016-07-18	317-499	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	INDIANAPLS	IN
2016-07-18	323-986	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	LSAN DA 04	CA
2016-07-18	346-762	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	RICHMNRNBG	TX
2016-07-18	385-254	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - UT	871E	PROVO	UT
2016-07-18	424-380	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	INGLEWOOD	CA
2016-07-18	438-405	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2016-07-18	438-406	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2016-07-18	469-886	0–9 XXXall 10 · 8 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DALLAS	TX
2016-07-18	831-353	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	WATSONVL	CA
2016-07-18	857-762	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	BOSTON	MA
2016-07-18	873-870	not yet reported which blocks →	Videotron Ltd.	8306	Aylmer	—
2016-07-18	873-880	not yet reported which blocks →	Videotron Ltd.	8306	Gatineau	—
2016-07-18	954-405	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	FTLAUDERDL	FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.