Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
—	845-321	7XXX8XXX · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	MIDDLETOWN	NY
—	845-326	0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-330	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	POUGHKEPSI	NY
—	845-331	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-334	0XXX1XXX · 2 holders which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-336	9XXX which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-338	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-339	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-340	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-341	none assigned yet which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-342	not yet reported which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-343	not yet reported which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-344	none assigned yet which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-346	none assigned yet which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MIDDLETOWN	NY
—	845-348	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	NYACK	NY
—	845-349	not yet reported which blocks →	SPOK, INC.	6630	NYACK	NY
—	845-351	0XXX1XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	TUXEDO	NY
—	845-352	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-353	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	NYACK	NY
—	845-354	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-355	0XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SLATE HILL	NY
—	845-356	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-357	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SUFFERN	NY
—	845-358	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	NYACK	NY
—	845-359	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PIERMONT	NY
—	845-361	6XXX7XXX8XXX · 3 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	CIRCLEVL	NY
—	845-362	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-363	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	BREWSTER	NY
—	845-364	1XXX4XXX6XXX7XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-365	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PIERMONT	NY
—	845-367	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NANUET	NY
—	845-368	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SUFFERN	NY
—	845-369	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SUFFERN	NY
—	845-371	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	SPRING VLY	NY
—	845-372	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	POUGHKEPSI	NY
—	845-373	0XXX1XXX2XXX3XXX5XXX6XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	AMENIA	NY
—	845-374	0XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	DENTON	NY
—	845-375	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC- NY	384C	NEWBURGH	NY
—	845-381	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MIDDLETOWN	NY
—	845-382	0XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-383	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	KINGSTON	NY
—	845-384	0XXX1XXX2XXX3XXX7XXX9XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	ESOPUS	NY
—	845-386	0XXX7XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	OTISVILLE	NY
—	845-387	not yet reported which blocks →	SPOK, INC.	6630	POUGHKEPSI	NY
—	845-398	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	PIERMONT	NY
—	845-400	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	SPRING VLY	NY
—	845-401	none assigned yet which blocks →	METROPCS, INC.	5562	NEWBURGH	NY
—	845-402	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	RCN TELECOM SERVICES, INC. - NY	7353	PEEKSKILL	NY
—	845-406	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	SPRING VLY	NY
—	845-408	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	MIDDLETOWN	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.