Recent prefix assignments

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

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

Rogers Communications Canada Inc. (Wireless) 46

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 28

NEW CINGULAR WIRELESS PCS, LLC - IL 23

ONVOY, LLC - CA 19

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

Quick find in this area code:

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	603-873	0XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NH	4017	SUNAPEE	NH
—	603-874	1XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NH	4017	MONROE	NH
—	603-875	8XXX which blocks →	UNION TEL. CO.	0049	ALTON	NH
—	603-876	2XXX5XXX6XXX8XXX · 4 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	MARLBOROGH	NH
—	603-878	5XXX7XXX8XXX · 3 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	GREENVILLE	NH
—	603-879	0XXX1XXX · 2 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-880	2XXX which blocks →	TELNYX LLC	073H	NASHUA	NH
—	603-881	6XXX which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-882	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-883	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-884	0XXX1XXX2XXX6XXX7XXX9XXX · 3 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-885	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-886	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-887	not yet reported which blocks →	GRANITE STATE TEL., INC.	0039	CHESTER	NH
—	603-888	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-889	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-890	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	SALEM	NH
—	603-891	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-892	2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	CONCORD	NH
—	603-893	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	SALEM	NH
—	603-894	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	SALEM	NH
—	603-895	7XXX which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	RAYMOND	NH
—	603-896	0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	SALEM	NH
—	603-897	1XXX5XXX9XXX · 2 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NASHUA	NH
—	603-898	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	SALEM	NH
—	603-899	0XXX7XXX8XXX · 2 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	RINDGE	NH
—	603-903	0–9 XXXall 10 · 4 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	KEENE	NH
—	603-910	0XXX2XXX5XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	HAMPTON	NH
—	603-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NH
—	603-912	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TERRA NOVA TELECOM INC.	145J	SALEM	NH
—	603-913	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	MERRIMACK	NH
—	603-922	2XXX4XXX6XXX7XXX9XXX · 5 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NO STRATFD	NH
—	603-923	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NH	4017	ROCHESTER	NH
—	603-924	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	PETERBROGH	NH
—	603-925	6XXX which blocks →	FREEDOM RING COMMUNICATIONS, LLC	8468	PETERBROGH	NH
—	603-926	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	HAMPTON	NH
—	603-927	6XXX which blocks →	MERRIMACK COUNTY TEL. CO.	0047	SUTTON	NH
—	603-928	1XXX7XXX · 2 holders which blocks →	FREEDOM RING COMMUNICATIONS, LLC	8468	SUNCOOK	NH
—	603-929	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	HAMPTON	NH
—	603-930	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NASHUA	NH
—	603-932	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - NH	637E	MANCHESTER	NH
—	603-934	not yet reported which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	FRANKLIN	NH
—	603-935	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	MANCHESTER	NH
—	603-938	1XXX9XXX which blocks →	MERRIMACK COUNTY TEL. CO.	0047	BRADFORD	NH
—	603-939	4XXX which blocks →	CONSOLIDATED COMMUNICATIONS OF MAINE COMPANY	3316	EASTCONWAY	NH
—	603-941	0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH	7778	WOLFEBORO	NH
—	603-942	1XXX2XXX6XXX · 3 holders which blocks →	CONSOLIDATED COMM OF NO. NEW ENGLAND-NH	5113	NORTHWOOD	NH
—	603-943	5XXX7XXX8XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	NASHUA	NH
—	603-947	7XXX which blocks →	FREEDOM RING COMMUNICATIONS, LLC	8468	PLYMOUTH	NH
—	603-950	not yet reported which blocks →				NH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.