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
2016-04-26	361-347	0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	TAFT	TX
2016-04-26	361-831	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	FLATONIA	TX
2016-04-26	639-886	not yet reported which blocks →	TELUS Integrated Communications	2782	Dundurn	—
2016-04-26	650-509	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	PALO ALTO	CA
2016-04-26	737-209	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	AUSTIN	TX
2016-04-26	786-481	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	HOMESTEAD	FL
2016-04-26	804-500	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	RICHMOND	VA
2016-04-26	873-202	not yet reported which blocks →	TELUS Quebec	2243	Saint-Ludger	—
2016-04-26	873-588	not yet reported which blocks →	Bell Mobility	6574	Wemindji	—
2016-04-26	873-589	not yet reported which blocks →	Bell Mobility	6574	Cheneville	—
2016-04-26	929-339	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2016-04-26	939-299	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	MAYAGUEZ	PR
2016-04-26	939-422	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	PONCE	PR
2016-04-26	939-525	0–9 XXXwhole prefix which blocks →	SUNCOM DBA T-MOBILE USA	8645	SAN GERMAN	PR
2016-04-26	985-314	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	PARADIS	LA
2016-04-25	236-282	not yet reported which blocks →	Navigata Communications Limited	078G	Balfour	—
2016-04-25	236-283	not yet reported which blocks →	Navigata Communications Limited	078G	Boswell	—
2016-04-25	236-284	not yet reported which blocks →	Navigata Communications Limited	078G	Crawford Bay	—
2016-04-25	236-285	not yet reported which blocks →	Navigata Communications Limited	078G	Duncan Lake	—
2016-04-25	236-286	not yet reported which blocks →	Navigata Communications Limited	078G	Fauquier	—
2016-04-25	236-287	not yet reported which blocks →	Navigata Communications Limited	078G	Kaslo	—
2016-04-25	236-288	not yet reported which blocks →	Navigata Communications Limited	078G	Nakusp	—
2016-04-25	236-289	not yet reported which blocks →	Navigata Communications Limited	078G	North Nelson	—
2016-04-25	236-290	not yet reported which blocks →	Navigata Communications Limited	078G	Riondel	—
2016-04-25	236-291	not yet reported which blocks →	Navigata Communications Limited	078G	South Slocan	—
2016-04-25	236-292	not yet reported which blocks →	Navigata Communications Limited	078G	Thrums	—
2016-04-25	236-293	not yet reported which blocks →	Navigata Communications Limited	078G	Trout Lake	—
2016-04-25	316-600	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	EL DORADO	KS
2016-04-25	440-857	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7443	CLEVELAND	OH
2016-04-25	469-354	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2016-04-25	470-318	0–9 XXXall 10 · 4 holders which blocks →	COMSOUTH TELENET, INC. - GA	9161	WINDER	GA
2016-04-25	475-214	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	STAMFORD	CT
2016-04-25	475-322	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2016-04-25	531-721	0–9 XXXall 10 · 3 holders which blocks →	GREAT PLAINS BROADBAND, INC. - NE	012E	OMAHA	NE
2016-04-25	567-970	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	TOLEDO	OH
2016-04-25	579-921	not yet reported which blocks →	Comwave Networks	160G	Franklin Centre	—
2016-04-25	579-922	not yet reported which blocks →	Comwave Networks	160G	Les Cedres	—
2016-04-25	579-923	not yet reported which blocks →	Comwave Networks	160G	Ormstown	—
2016-04-25	579-924	not yet reported which blocks →	Comwave Networks	160G	Riviere-Beaudette	—
2016-04-25	579-925	not yet reported which blocks →	Comwave Networks	160G	St-Clet	—
2016-04-25	579-926	not yet reported which blocks →	Comwave Networks	160G	Ste-Justine-de-Newton	—
2016-04-25	579-927	not yet reported which blocks →	Comwave Networks	160G	Ste-Marthe	—
2016-04-25	579-940	not yet reported which blocks →	Comwave Networks	160G	Coteau-Landing	—
2016-04-25	605-671	7XXX8XXX9XXX which blocks →	AERIAL COMMUNICATIONS, INC.	6701	COLTON	SD
2016-04-25	605-953	6XXX7XXX8XXX9XXX which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HARTFORD	SD
2016-04-25	605-963	2XXX3XXX6XXX7XXX9XXX · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	DELLRAPIDS	SD
2016-04-25	620-888	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	HUTCHINSON	KS
2016-04-25	650-499	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	MT VIEW	CA
2016-04-25	719-728	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	PEYTON	CO
2016-04-25	782-428	not yet reported which blocks →	Bragg Communications Inc.	4878	Ecum Secum	—

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.