Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	607-433	7XXX which blocks →	VERIZON NEW YORK, INC.	9104	ONEONTA	NY
—	607-434	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ONEONTA	NY
—	607-435	5XXX6XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ONEONTA	NY
—	607-436	5XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	ONEONTA	NY
—	607-437	2XXX4XXX5XXX6XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ONEONTA	NY
—	607-441	3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	PAETEC ITEL, LLC	829J	ONEONTA	NY
—	607-458	not yet reported which blocks →	ARMSTRONG TEL. CO. - NY	0071	WOODHULL	NY
—	607-467	not yet reported which blocks →	DEPOSIT TEL. CO., INC.	0089	DEPOSIT	NY
—	607-474	4XXX5XXX9XXX · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LODI	NY
—	607-478	0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 5 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	ANDOVER	NY
—	607-481	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	ELMIRA	NY
—	607-483	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	ELMIRA	NY
—	607-484	5XXX6XXX7XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	ENDICOTT	NY
—	607-486	1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CINCINNTUS	NY
—	607-498	1XXX2XXX3XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	ROSCOE	NY
—	607-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	607-522	not yet reported which blocks →	EMPIRE TEL. CORP.	0093	PRATTSBURG	NY
—	607-523	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	VERIZON NEW YORK, INC.	9104	LINDLEY	NY
—	607-524	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	CATON	NY
—	607-525	not yet reported which blocks →	ARMSTRONG TEL. CO. - NY	0071	TROUPSBURG	NY
—	607-527	0XXX1XXX2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	CAMPBELL	NY
—	607-529	0XXX2XXX5XXX7XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	CHEMUNG	NY
—	607-532	not yet reported which blocks →	TRUMANSBURG TELEPHONE COMPANY, INC.	0131	INTERLAKEN	NY
—	607-533	0XXX1XXX2XXX6XXX8XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	LANSING	NY
—	607-535	1XXX5XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	WATKISGLEN	NY
—	607-537	0–9 XXXall 10 · 6 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	ELMIRA	NY
—	607-538	0XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	HOBART	NY
—	607-539	0XXX2XXX4XXX5XXX8XXX · 4 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SLATEVLSPG	NY
—	607-542	2XXX3XXX4XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CORNING	NY
—	607-543	3XXX4XXX · 2 holders which blocks →	METROPCS, INC.	5562	CORTLAND	NY
—	607-544	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	COOPERSTN	NY
—	607-545	0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	CANASERAGA	NY
—	607-546	not yet reported which blocks →	EMPIRE TEL. CORP.	0093	BURDETT	NY
—	607-547	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	COOPERSTN	NY
—	607-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	NY
—	607-561	9XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SIDNEY	NY
—	607-562	0XXX1XXX5XXX6XXX9XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	BIG FLATS	NY
—	607-563	not yet reported which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SIDNEY	NY
—	607-564	0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	NEWFIELD	NY
—	607-565	0XXX1XXX5XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	WAVERLY	NY
—	607-566	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	AVOCA	NY
—	607-569	7XXX8XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	HAMMONDSPT	NY
—	607-582	not yet reported which blocks →	EMPIRE TEL. CORP.	0093	LODI	NY
—	607-583	0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	SAVONA	NY
—	607-584	3XXX6XXX · 2 holders which blocks →	LEVEL 3 TELECOM OF NEW YORK, LP - NY	8473	BINGHAMTON	NY
—	607-587	1XXX5XXX6XXX7XXX · 4 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	ALFRED	NY
—	607-588	0XXX1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	GRANDGORGE	NY
—	607-589	2XXX5XXX8XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SPENCER	NY
—	607-590	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	HORNELL	NY
—	607-591	2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	CORTLAND	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.