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
—	631-795	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-797	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-798	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-799	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-800	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	SOUTHAMPTN	NY
—	631-801	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	EASTPORT	NY
—	631-802	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	PTJEFFERSN	NY
—	631-803	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	BELLPORT	NY
—	631-808	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SAG HARBOR	NY
—	631-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	631-815	0XXX2XXX3XXX5XXX7XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	FARMINGDL	NY
—	631-817	3XXX4XXX6XXX7XXX9XXX which blocks →	ONVOY, LLC- NY	384C	FIREISLAND	NY
—	631-820	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	RONKONKOMA	NY
—	631-821	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SHOREHAM	NY
—	631-822	0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	CENTRAISLP	NY
—	631-823	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BAYPORT	NY
—	631-824	0–9 XXXall 10 · 7 holders which blocks →	PAETEC ITEL, LLC	829J	HUNTINGTON	NY
—	631-826	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-828	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	PTJEFFERSN	NY
—	631-830	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	RIVERHEAD	NY
—	631-831	none assigned yet which blocks →	METROPCS, INC.	5562	BRENTWOOD	NY
—	631-832	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	BAYPORT	NY
—	631-834	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BRENTWOOD	NY
—	631-837	1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	NORTHPORT	NY
—	631-838	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BRENTWOOD	NY
—	631-840	0XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	ISLIP	NY
—	631-841	8XXX9XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	AMITYVILLE	NY
—	631-842	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	AMITYVILLE	NY
—	631-843	6XXX which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-844	5XXX8XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-845	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-847	3XXX which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-849	0–9 XXXall 10 · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	SHOREHAM	NY
—	631-850	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	W COMMACK	NY
—	631-851	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	CENTRAISLP	NY
—	631-852	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	RIVERHEAD	NY
—	631-853	0XXX9XXX which blocks →	VERIZON NEW YORK, INC.	9104	CENTRAISLP	NY
—	631-854	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BRENTWOOD	NY
—	631-855	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	DEER PARK	NY
—	631-856	0–9 XXXall 10 · 6 holders which blocks →	CSC VOICE, LLC	612K	HAMPTNBAYS	NY
—	631-857	3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	COLDSPGHBR	NY
—	631-858	4XXX which blocks →	VERIZON NEW YORK, INC.	9104	W COMMACK	NY
—	631-859	2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	ISLIP	NY
—	631-860	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DEER PARK	NY
—	631-861	0XXX3XXX4XXX5XXX7XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	FARMINGDL	NY
—	631-862	2XXX4XXX5XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	ST JAMES	NY
—	631-863	3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	SMITHTOWN	NY
—	631-864	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	COMMACK	NY
—	631-865	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	DEER PARK	NY
—	631-866	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BELLPORT	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.