Recent prefix assignments

360 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 28

ONVOY, LLC - CA 26

NEW CINGULAR WIRELESS PCS, LLC - IL 26

Rogers Communications Canada Inc. (Wireless) 23

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
—	315-332	0XXX1XXX6XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	NEWARK	NY
—	315-334	0XXX which blocks →	VERIZON NEW YORK, INC.	9104	ROME	NY
—	315-335	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ROME	NY
—	315-336	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ROME	NY
—	315-337	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ROME	NY
—	315-338	4XXX which blocks →	VERIZON NEW YORK, INC.	9104	ROME	NY
—	315-339	8XXX which blocks →	VERIZON NEW YORK, INC.	9104	ROME	NY
—	315-340	not yet reported which blocks →	SPOK, INC.	6630	GENEVA	NY
—	315-341	0XXX4XXX8XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	OSWEGO	NY
—	315-342	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	OSWEGO	NY
—	315-343	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	OSWEGO	NY
—	315-344	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 8 holders which blocks →	VERIZON NEW YORK, INC.	9104	HEUVELTON	NY
—	315-345	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	SYRACUSE	NY
—	315-346	2XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	CROGHAN	NY
—	315-347	0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	EDWARDS TEL. CO., INC.	0092	HERMON	NY
—	315-348	7XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	LYONSFALLS	NY
—	315-349	9XXX which blocks →	VERIZON NEW YORK, INC.	9104	OSWEGO	NY
—	315-350	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	TC SYSTEMS, INC. - NY	7140	SYRACUSE	NY
—	315-351	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	UTICA	NY
—	315-352	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BALDWINSVL	NY
—	315-353	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	NORWOOD	NY
—	315-354	2XXX6XXX7XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	RAQUETTELK	NY
—	315-355	0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks →	NORTHLAND NETWORKS, LTD. - NY	7556	MADRID	NY
—	315-356	not yet reported which blocks →	NORTHLAND NETWORKS, LTD. - NY	7556	ROME	NY
—	315-357	7XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	EAGLE BAY	NY
—	315-358	0XXX4XXX6XXX9XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BOONVILLE	NY
—	315-359	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NEWARK	NY
—	315-361	0XXX3XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	ONEIDA	NY
—	315-362	1XXX2XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	SYRACUSE	NY
—	315-363	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	ONEIDA	NY
—	315-364	0XXX1XXX4XXX6XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	POPLAR RDG	NY
—	315-365	0XXX1XXX4XXX5XXX8XXX · 3 holders which blocks →	PORT BYRON TEL. CO.	0118	SAVANNAH	NY
—	315-366	0XXX1XXX4XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	ONEIDA	NY
—	315-367	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	ONEIDA	NY
—	315-368	3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	UTICA	NY
—	315-369	0XXX1XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	OLD FORGE	NY
—	315-370	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	AUBURN	NY
—	315-371	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TC SYSTEMS, INC. - NY	7140	ROME	NY
—	315-374	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	SYRACUSE	NY
—	315-375	0XXX1XXX2XXX3XXX5XXX7XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	MORRISTOWN	NY
—	315-376	not yet reported which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	LOWVILLE	NY
—	315-377	0XXX2XXX4XXX6XXX · 4 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	LOWVILLE	NY
—	315-378	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SYRACUSE	NY
—	315-379	5XXX6XXX8XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	CANTON	NY
—	315-380	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SYRACUSE	NY
—	315-381	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	TC SYSTEMS, INC. - NY	7140	CLINTON	NY
—	315-382	9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	SYRACUSE	NY
—	315-384	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	NORFOLK	NY
—	315-385	1XXX7XXX9XXX · 2 holders which blocks →	TC SYSTEMS, INC. - NY	7140	SYRACUSE	NY
—	315-386	0XXX5XXX6XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	CANTON	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.