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
—	631-867	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	LINDENHST	NY
—	631-868	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	BAYPORT	NY
—	631-869	1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BELLPORT	NY
—	631-870	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	CENTRAISLP	NY
—	631-874	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	CTRMORICHS	NY
—	631-878	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	CTRMORICHS	NY
—	631-879	1XXX2XXX3XXX5XXX7XXX8XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	PATCHOGUE	NY
—	631-881	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	AT&T - LOCAL	7421	CENTRAISLP	NY
—	631-883	2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BAYPORT	NY
—	631-884	4XXX which blocks →	VERIZON NEW YORK, INC.	9104	LINDENHST	NY
—	631-886	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	WADING RIV	NY
—	631-888	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	LINDENHST	NY
—	631-890	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PATCHOGUE	NY
—	631-892	2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BAY SHORE	NY
—	631-893	9XXX which blocks →	VERIZON NEW YORK, INC.	9104	BABYLON	NY
—	631-894	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BAY SHORE	NY
—	631-895	0XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	QUOGUE	NY
—	631-898	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	WESTHAMPTN	NY
—	631-899	0XXX1XXX3XXX4XXX6XXX7XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	SAG HARBOR	NY
—	631-900	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	W COMMACK	NY
—	631-904	0XXX1XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	CENTRAISLP	NY
—	631-905	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	RIVERHEAD	NY
—	631-907	2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	E HAMPTON	NY
—	631-909	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	CTRMORICHS	NY
—	631-910	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	XO NEW YORK, INC.	8340	WADING RIV	NY
—	631-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	631-912	3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	NORTHPORT	NY
—	631-913	1XXX3XXX5XXX6XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	RONKONKOMA	NY
—	631-915	not yet reported which blocks →	AMERICAN NETWORK, INC.	8667	RIVERHEAD	NY
—	631-918	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	DEER PARK	NY
—	631-919	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	SAG HARBOR	NY
—	631-920	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	MIDLAND	NY
—	631-922	8XXX which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BRENTWOOD	NY
—	631-923	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	AT&T - LOCAL	7421	HUNTINGTON	NY
—	631-924	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	YAPHANK	NY
—	631-925	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NORTHPORT	NY
—	631-927	4XXX7XXX · 2 holders which blocks →	AT&T - LOCAL	7421	FARMINGDL	NY
—	631-928	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PTJEFFERSN	NY
—	631-929	2XXX7XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	WADING RIV	NY
—	631-930	1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	CENTRAISLP	NY
—	631-935	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	HUNTINGTON	NY
—	631-936	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	XXXXXXXXXX	NY
—	631-940	none assigned yet which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	DEER PARK	NY
—	631-941	6XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	STONYBROOK	NY
—	631-944	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	HUNTINGTON	NY
—	631-947	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BELLPORT	NY
—	631-948	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BRENTWOOD	NY
—	631-950	not yet reported which blocks →				NY
—	631-951	7XXX8XXX which blocks →	VERIZON NEW YORK, INC.	9104	BRENTWOOD	NY
—	631-952	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BRENTWOOD	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.