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
—	631-661	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BABYLON	NY
—	631-663	0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	KINGS PARK	NY
—	631-664	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	CENTRAISLP	NY
—	631-665	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BAY SHORE	NY
—	631-666	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BAY SHORE	NY
—	631-667	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	DEER PARK	NY
—	631-668	8XXX which blocks →	VERIZON NEW YORK, INC.	9104	MONTAUK PT	NY
—	631-669	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BABYLON	NY
—	631-670	0XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	COMMACK	NY
—	631-673	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	HUNTINGTON	NY
—	631-674	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	MIDLAND	NY
—	631-675	none assigned yet which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	STONYBROOK	NY
—	631-677	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	SAYVILLE	NY
—	631-678	1XXX2XXX3XXX5XXX6XXX7XXX8XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BRENTWOOD	NY
—	631-679	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-683	3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	HUNTINGTON	NY
—	631-685	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks →	ONVOY, LLC- NY	384C	HAMPTNBAYS	NY
—	631-686	0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	ST JAMES	NY
—	631-687	0XXX7XXX9XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	PATCHOGUE	NY
—	631-688	0XXX2XXX which blocks →	TC SYSTEMS, INC. - NY	7140	FARMINGDL	NY
—	631-689	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	STONYBROOK	NY
—	631-691	8XXX9XXX which blocks →	VERIZON NEW YORK, INC.	9104	AMITYVILLE	NY
—	631-692	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	COLDSPGHBR	NY
—	631-693	1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	TC SYSTEMS, INC. - NY	7140	AMITYVILLE	NY
—	631-694	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-695	not yet reported which blocks →	SPOK, INC.	6630	BRENTWOOD	NY
—	631-696	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SELDEN	NY
—	631-698	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SELDEN	NY
—	631-699	1XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	SAYVILLE	NY
—	631-700	not yet reported which blocks →				NY
—	631-701	1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	EASTPORT	NY
—	631-702	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	SOUTHAMPTN	NY
—	631-706	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	STONYBROOK	NY
—	631-708	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BRENTWOOD	NY
—	631-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	631-712	7XXX8XXX9XXX which blocks →	TC SYSTEMS, INC. - NY	7140	FARMINGDL	NY
—	631-713	not yet reported which blocks →	PAETEC ITEL, LLC	829J	EASTPORT	NY
—	631-715	0XXX4XXX5XXX9XXX · 4 holders which blocks →	TC SYSTEMS, INC. - NY	7140	CENTRAISLP	NY
—	631-716	1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	SELDEN	NY
—	631-719	not yet reported which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	FARMINGDL	NY
—	631-721	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	SELDEN	NY
—	631-722	1XXX6XXX7XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	JAMESPORT	NY
—	631-723	6XXX8XXX9XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	HAMPTNBAYS	NY
—	631-724	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SMITHTOWN	NY
—	631-725	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SAG HARBOR	NY
—	631-726	0XXX2XXX7XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	WATER MILL	NY
—	631-727	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	RIVERHEAD	NY
—	631-728	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	HAMPTNBAYS	NY
—	631-729	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	ATLANTIC	NY
—	631-730	0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	PATCHOGUE	NY

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.