Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 920

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 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
2026-09-03	920-719	3XXX which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	GREEN BAY	WI
2025-10-08	920-513	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	APPLETON	WI
2025-07-14	920-466	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	HD CARRIER LLC	321J	GREEN BAY	WI
2024-10-11	920-715	2XXX which blocks →	ONVOY SPECTRUM, LLC	624H	CEDARGROVE	WI
2024-10-08	920-608	0XXX1XXX which blocks →	EON TELECOM, INC.	839J	WATERLOO	WI
2024-10-08	920-974	0–9 XXXwhole prefix which blocks →	EON TELECOM, INC.	839J	BRANDON	WI
2024-10-08	920-978	0XXX1XXX2XXX3XXX4XXX5XXX6XXX which blocks →	EON TELECOM, INC.	839J	EDEN	WI
2024-10-08	920-985	0–9 XXXwhole prefix which blocks →	EON TELECOM, INC.	839J	CLYMAN	WI
2024-10-08	920-995	0–9 XXXwhole prefix which blocks →	EON TELECOM, INC.	839J	CLEVELAND	WI
2024-10-08	920-998	1XXX8XXX · 2 holders which blocks →	EON TELECOM, INC.	839J	VAN DYNE	WI
2024-06-17	920-971	1XXX which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	READFIELD	WI
2024-06-07	920-963	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	APPLETON	WI
2024-05-31	920-961	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - WI	225C	APPLETON	WI
2024-02-28	920-957	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	FONDDU LAC	WI
2023-12-19	920-956	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	NEENAH	WI
2023-12-12	920-947	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	LTL CHUTE	WI
2023-12-12	920-951	0XXX1XXX3XXX9XXX · 4 holders which blocks →	ONVOY, LLC - WI	225C	FTATKINSON	WI
2023-11-14	920-936	0XXX1XXX2XXX3XXX4XXX8XXX · 2 holders which blocks →	COMMIO, LLC	939H	KEWAUNEE	WI
2023-11-14	920-943	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SHEBOYGAN	WI
2023-09-27	920-934	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	DE PERE	WI
2023-09-26	920-916	6XXX which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	HOWARDSGRV	WI
2023-08-17	920-908	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	HORICON	WI
2023-08-02	920-900	0XXX1XXX6XXX8XXX9XXX · 4 holders which blocks →	UNITED STATES CELLULAR - WI	6274	WATERTOWN	WI
2023-07-07	920-879	0XXX1XXX2XXX8XXX · 2 holders which blocks →	ONVOY, LLC - WI	225C	WAUPUN	WI
2023-06-09	920-274	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	DENMARK	WI
2023-06-09	920-353	2XXX3XXX5XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	THERESA	WI
2023-04-14	920-870	0XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	SHEBOGNFLS	WI
2023-03-10	920-806	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	APPLETON	WI
2023-03-10	920-814	0–9 XXXall 10 · 2 holders which blocks →	TDS METROCOM, LLC	520K	SHEBOYGAN	WI
2023-03-10	920-816	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TDS METROCOM, LLC	520K	MANITOWOC	WI
2023-03-07	920-813	1XXX which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GILLETT	WI
2023-02-14	920-805	8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LTLSTURGEN	WI
2023-02-10	920-804	0–9 XXXall 10 · 2 holders which blocks →	NUSO, LLC	732J	APPLETON	WI
2023-02-06	920-761	1XXX2XXX which blocks →	NUSO, LLC	732J	CLYMAN	WI
2023-02-06	920-780	0–9 XXXall 10 · 2 holders which blocks →	NUSO, LLC	732J	NEENAH	WI
2023-01-13	920-500	0–9 XXXall 10 · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	OSHKOSH	WI
2022-12-06	920-760	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	APPLETON	WI
2022-10-28	920-962	0XXX2XXX3XXX9XXX which blocks →	ONVOY, LLC - WI	225C	MT CALVARY	WI
2022-09-26	920-920	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - WI	225C	NESHKORO	WI
2022-08-09	920-708	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ALGOMA	WI
2022-04-29	920-580	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	T-MOBILE USA, INC.	6529	OSHKOSH	WI
2022-02-25	920-610	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	GREEN BAY	WI
2022-02-17	920-874	1XXX3XXX7XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NEWTONBURG	WI
2022-02-17	920-972	2XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BURNETT	WI
2022-02-14	920-792	0XXX2XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NEWTON	WI
2022-02-11	920-752	0XXX9XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	REDGRANITE	WI
2022-02-09	920-714	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	APPLETON	WI
2022-01-27	920-914	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BERLIN	WI
2022-01-14	920-742	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	KAUKAUNA	WI
2022-01-14	920-942	1XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	KRAKOW	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.