Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 508

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 1

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
—	508-843	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BEVERLY	MA
—	508-844	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC.	7135	TAUNTON	MA
—	508-845	0XXX5XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	SHREWSBURY	MA
—	508-846	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BROCKTON	MA
—	508-847	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WORCESTER	MA
—	508-848	0XXX8XXX9XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	FRAMINGHAM	MA
—	508-849	1XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-850	0XXX5XXX6XXX8XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	WALPOLE	MA
—	508-851	0XXX4XXX5XXX7XXX9XXX · 3 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	MANSFIELD	MA
—	508-852	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-853	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-854	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-855	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-856	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-857	0XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	BROCKTON	MA
—	508-858	1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MA	4018	NEWBEDFORD	MA
—	508-860	0XXX3XXX5XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-861	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	FRAMINGHAM	MA
—	508-862	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	HYANNIS	MA
—	508-863	4XXX5XXX7XXX8XXX · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ROCHESTER	MA
—	508-864	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	AUBURN	MA
—	508-865	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	MILLBURY	MA
—	508-866	0XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	CARVER	MA
—	508-867	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	NOBROOKFLD	MA
—	508-868	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	WORCESTER	MA
—	508-869	4XXX5XXX9XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BOYLSTON	MA
—	508-870	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WESTBORO	MA
—	508-871	6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	WESTBORO	MA
—	508-872	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-873	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WORCESTER	MA
—	508-874	not yet reported which blocks →	NORFOLK COUNTY INTERNET, INC.	6083	STURBRIDGE	MA
—	508-875	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-876	0XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	BLACKSTONE	MA
—	508-877	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-878	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CAMBRIDGE	MA
—	508-879	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-880	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	TAUNTON	MA
—	508-881	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FRAMINGHAM	MA
—	508-882	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	OAKHAM	MA
—	508-883	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	BLACKSTONE	MA
—	508-884	0XXX6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	TAUNTON	MA
—	508-885	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	SPENCER	MA
—	508-886	1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	RUTLAND	MA
—	508-887	0XXX1XXX2XXX3XXX5XXX6XXX which blocks →	VERIZON NEW ENGLAND INC.	9102	GRAFTON	MA
—	508-888	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	SAGAMORE	MA
—	508-889	none assigned yet which blocks →	METROPCS, INC.	5562	ROCHESTER	MA
—	508-890	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	WORCESTER	MA
—	508-891	not yet reported which blocks →	VERIZON NEW ENGLAND INC.	9102	FALMOUTH	MA
—	508-892	5XXX6XXX · 2 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	LEICESTER	MA
—	508-893	1XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	VERIZON NEW ENGLAND INC.	9102	HOLLISTON	MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.