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
—	631-731	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	AMAGANSETT	NY
—	631-732	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SELDEN	NY
—	631-733	not yet reported which blocks →	SCARSDALE SECURITY SYSTEMS, INC.	2612	BRENTWOOD	NY
—	631-734	0XXX1XXX3XXX8XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	PECONIC	NY
—	631-736	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SELDEN	NY
—	631-737	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	RONKONKOMA	NY
—	631-738	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	RONKONKOMA	NY
—	631-739	2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	RONKONKOMA	NY
—	631-740	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	RIVERHEAD	NY
—	631-744	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SHOREHAM	NY
—	631-748	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BRENTWOOD	NY
—	631-749	5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	SHELTER IS	NY
—	631-750	3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	SAYVILLE	NY
—	631-751	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	STONYBROOK	NY
—	631-752	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-753	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-754	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	NORTHPORT	NY
—	631-755	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-756	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-757	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	NORTHPORT	NY
—	631-758	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PATCHOGUE	NY
—	631-759	0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	HUNTINGTON	NY
—	631-760	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	HUNTINGTON	NY
—	631-761	none assigned yet which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	CENTRAISLP	NY
—	631-762	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	STONYBROOK	NY
—	631-763	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	COLDSPGHBR	NY
—	631-765	7XXX8XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	SOUTHOLD	NY
—	631-768	3XXX7XXX8XXX9XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	FARMINGDL	NY
—	631-769	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	SHOREHAM	NY
—	631-770	3XXX5XXX7XXX8XXX · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	FARMINGDL	NY
—	631-772	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	ATLANTIC	NY
—	631-773	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	FARMINGDL	NY
—	631-774	none assigned yet which blocks →	METROPCS, INC.	5562	BRENTWOOD	NY
—	631-775	none assigned yet which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	YAPHANK	NY
—	631-776	3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	BELLPORT	NY
—	631-777	0XXX6XXX9XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	FARMINGDL	NY
—	631-778	1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	CENTRAISLP	NY
—	631-779	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CSC VOICE, LLC	612K	JAMESPORT	NY
—	631-780	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	SMITHTOWN	NY
—	631-781	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-782	0XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	DEER PARK	NY
—	631-783	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-784	0XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks →	TC SYSTEMS, INC. - NY	7140	CENTRAISLP	NY
—	631-785	none assigned yet which blocks →	VERIZON NEW YORK, INC.	9104	NASSAUZN09	NY
—	631-787	2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TC SYSTEMS, INC. - NY	7140	CENTRAISLP	NY
—	631-788	not yet reported which blocks →	FISHERS ISLAND TEL. CORP.	0095	FISHERS IS	NY
—	631-789	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	AMITYVILLE	NY
—	631-791	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	PTJEFFERSN	NY
—	631-792	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BABYLON	NY
—	631-794	not yet reported which blocks →	PAETEC ITEL, LLC	829J	FARMINGDL	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.