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
2016-09-23	516-373	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN01	NY
2016-09-23	516-675	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NASSAUZN02	NY
2016-09-23	563-239	0–9 XXXall 10 · 7 holders which blocks →	MCC TELEPHONY OF IOWA, LLC - IA	751F	DUBUQUE	IA
2016-09-23	581-770	not yet reported which blocks →	Videotron Ltd.	8306	Sainte-Rose	—
2016-09-23	581-771	not yet reported which blocks →	Videotron Ltd.	8306	Sainte-Justine	—
2016-09-23	581-772	not yet reported which blocks →	Videotron Ltd.	8306	Saint-Odilon	—
2016-09-23	581-773	not yet reported which blocks →	Videotron Ltd.	8306	Saint-Zacharie	—
2016-09-23	581-774	not yet reported which blocks →	Cooptel	818D	Saint-Camille	—
2016-09-23	616-278	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRAND RPDS	MI
2016-09-23	646-940	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2016-09-23	646-972	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	NWYRCYZN01	NY
2016-09-23	646-992	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2016-09-23	712-535	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SIOUX CITY	IA
2016-09-23	782-450	not yet reported which blocks →	Bragg Communications Inc.	4878	Eskasoni	—
2016-09-23	804-676	0–9 XXXall 10 · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WAVERLY	VA
2016-09-23	845-904	0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	CLINTONDL	NY
2016-09-23	908-357	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	LINDEN	NJ
2016-09-23	916-465	0–9 XXXall 10 · 4 holders which blocks →	FIDIUM ENTERPRISE SERVICES, LLC	3964	SCRM MAIN	CA
2016-09-23	916-886	0–9 XXXall 10 · 5 holders which blocks →	FIDIUM ENTERPRISE SERVICES, LLC	3964	RSVL MAIN	CA
2016-09-23	929-420	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2016-09-23	929-426	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN09	NY
2016-09-23	929-427	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2016-09-23	929-435	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN08	NY
2016-09-23	980-260	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NC	8389	CHARLOTTE	NC
2016-09-22	205-878	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	JASPER	AL
2016-09-22	302-488	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - DE	969E	HARRINGTON	DE
2016-09-22	315-990	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	HEUVELTON	NY
2016-09-22	315-994	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	POPLAR RDG	NY
2016-09-22	315-995	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	RED CREEK	NY
2016-09-22	315-998	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	MORRISTOWN	NY
2016-09-22	365-712	not yet reported which blocks →	Bell Canada	8051	Brampton	—
2016-09-22	365-713	not yet reported which blocks →	Bell Canada	8051	Burlington	—
2016-09-22	365-714	not yet reported which blocks →	Bell Canada	8051	Cobourg	—
2016-09-22	365-715	not yet reported which blocks →	Bell Canada	8051	Hamilton	—
2016-09-22	365-716	not yet reported which blocks →	Bell Canada	8051	Oshawa	—
2016-09-22	365-717	not yet reported which blocks →	Bell Canada	8051	Richmond Hill	—
2016-09-22	365-718	not yet reported which blocks →	Bell Canada	8051	St. Catharines-Thorold	—
2016-09-22	413-412	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NORTHADAMS	MA
2016-09-22	551-276	0–9 XXXall 10 · 7 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	RIDGEWOOD	NJ
2016-09-22	586-696	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ROSEVILLE	MI
2016-09-22	702-827	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF NEVADA, LLC - NV	408F	LAUGHLIN	NV
2016-09-22	702-846	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	LAS VEGAS	NV
2016-09-22	716-466	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	HOLLAND	NY
2016-09-22	804-600	0–9 XXXall 10 · 6 holders which blocks →	AMELIA TEL. CORP.	0217	AMELIACTHS	VA
2016-09-22	845-969	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC- NY	384C	STANFORDVL	NY
2016-09-22	978-643	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BARRE	MA
2016-09-21	226-588	not yet reported which blocks →	Primus Telecommunications Canada Inc.	201A	Galt	—
2016-09-21	226-589	not yet reported which blocks →	Primus Telecommunications Canada Inc.	201A	Hespeler	—
2016-09-21	251-320	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	JACKSON	AL
2016-09-21	254-351	0XXX1XXX2XXX3XXX9XXX · 3 holders which blocks →	VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW	1181	CRAWFORD	TX

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.