Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
2002-07-25	920-569	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	GREEN BAY	WI
2002-07-23	920-425	2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks →	NET LEC, INC.	6183	DE PERE	WI
2002-06-07	920-531	0XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	NEW LONDON	WI
2002-05-28	920-327	0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks →	WISCONSIN BELL INC	9327	GREEN BAY	WI
2002-05-17	920-548	0–9 XXXall 10 · 3 holders which blocks →	TDS METROCOM, LLC	520K	GREEN BAY	WI
2002-05-13	920-267	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	OSHKOSH	WI
2002-05-13	920-268	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	APPLETON	WI
2002-05-13	920-471	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	GREEN BAY	WI
2002-05-13	920-472	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	NEW LONDON	WI
2002-05-13	920-473	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	STURGEONBY	WI
2002-04-30	920-422	not yet reported which blocks →	METRO SOUTHWEST PCS, LLP	9759	APPLETON	WI
2002-04-15	920-541	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	JEFFERSON	WI
2002-04-15	920-542	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 9 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	FTATKINSON	WI
2002-04-15	920-543	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	BURNETT	WI
2002-04-15	920-643	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	HORICON	WI
2002-04-15	920-644	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	MAYVILLE	WI
2002-03-25	920-545	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	WATERTOWN	WI
2002-03-25	920-547	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	SHEBOYGAN	WI
2002-03-25	920-933	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	FONDDU LAC	WI
2002-03-20	920-463	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	RANDOLPH	WI
2002-03-20	920-464	1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	CHILTON	WI
2002-01-09	920-382	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	BEAVER DAM	WI
2001-12-11	920-252	4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	OSHKOSH	WI
2001-10-02	920-397	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FTATKINSON	WI
2001-08-12	920-367	0–9 XXXall 10 · 9 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	DENMARK	WI
2001-08-09	920-265	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	GREEN BAY	WI
2001-08-02	920-256	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	STURGEONBY	WI
2001-06-28	920-341	1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	CLYMAN	WI
2001-06-18	920-355	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH INC. - WI	0886	MAPLETON	WI
2001-06-18	920-363	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	BAILEYSHBR	WI
2001-06-18	920-365	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	WISCONSIN BELL INC	9327	ALGOMA	WI
2001-06-18	920-368	2XXX3XXX4XXX6XXX which blocks →	FRONTIER NORTH INC. - WI	0886	NEOSHO	WI
2001-06-18	920-395	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	WISCONSIN BELL INC	9327	SHEBOYGAN	WI
2001-06-16	920-282	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF WISCONSIN, LLC - WI	227F	CAMBRIA	WI
2001-06-12	920-276	1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	FRONTIER NORTH INC. - WI	0886	THERESA	WI
2001-06-08	920-827	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	NEWHOLSTEN	WI
2001-06-08	920-838	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX which blocks →	UNITED STATES CELLULAR - WI	6274	PLYMOUTH	WI
2001-06-08	920-844	4XXX6XXX8XXX · 2 holders which blocks →	FRONTIER NORTH INC. - WI	0886	BRILLION	WI
2001-06-05	920-342	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	WATERTOWN	WI
2001-06-05	920-344	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	BEAVER DAM	WI
2001-05-23	920-255	not yet reported which blocks →	WISCONSIN RSA #10 LIMITED PARTNERSHIP	5564	KEWAUNEE	WI
2001-04-27	920-288	1XXX2XXX7XXX9XXX · 3 holders which blocks →	WISCONSIN BELL INC	9327	GREEN BAY	WI
2001-04-18	920-313	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LOMIRA	WI
2001-04-18	920-316	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	OOSTBURG	WI
2001-04-09	920-277	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	APPLETON	WI
2001-04-03	920-728	5XXX6XXX7XXX8XXX9XXX which blocks →	UNITED STATES CELLULAR - WI	6274	FTATKINSON	WI
2001-02-14	920-216	4XXX5XXX7XXX8XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OSHKOSH	WI
2001-02-14	920-540	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	APPLETON	WI
2001-02-14	920-819	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GREEN BAY	WI
2001-02-08	920-581	3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	FONDDU LAC	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.