Recent prefix assignments

2 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 507

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1

8X8, INC. 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
—	507-423	not yet reported which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	COTTONWOOD	MN
—	507-424	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MN	184D	ROCHESTER	MN
—	507-425	none assigned yet which blocks →	CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK	1445	FULDA	MN
—	507-426	1XXX which blocks →	CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK	1445	FAIRFAX	MN
—	507-427	6XXX which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	MOUNTAINLK	MN
—	507-428	0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	GHENT	MN
—	507-429	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WINONA	MN
—	507-433	not yet reported which blocks →	QWEST CORPORATION	9631	AUSTIN	MN
—	507-434	not yet reported which blocks →	QWEST CORPORATION	9631	AUSTIN	MN
—	507-435	3XXX5XXX6XXX8XXX · 4 holders which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	LEWISVILLE	MN
—	507-436	2XXX3XXX4XXX6XXX · 3 holders which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	NORTHROP	MN
—	507-437	not yet reported which blocks →	QWEST CORPORATION	9631	AUSTIN	MN
—	507-438	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	AUSTIN	MN
—	507-439	not yet reported which blocks →	SLEEPY EYE TEL. CO.	1483	HANSKA	MN
—	507-442	2XXX6XXX9XXX · 2 holders which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	EDGERTON	MN
—	507-443	0XXX2XXX3XXX4XXX7XXX · 3 holders which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	LEOTA	MN
—	507-444	not yet reported which blocks →	QWEST CORPORATION	9631	OWATONNA	MN
—	507-445	4XXX6XXX7XXX8XXX · 3 holders which blocks →	CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK	1445	STORDEN	MN
—	507-446	3XXX which blocks →	QWEST CORPORATION	9631	OWATONNA	MN
—	507-447	not yet reported which blocks →	GRANADA TEL. CO.	1399	GRANADA	MN
—	507-448	1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9631	GLENVILLE	MN
—	507-449	not yet reported which blocks →	CLARITY TELECOM, LLC DBA BLUEPEAK	4768	LUVERNE	MN
—	507-450	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WINONA	MN
—	507-451	not yet reported which blocks →	QWEST CORPORATION	9631	OWATONNA	MN
—	507-452	not yet reported which blocks →	QWEST CORPORATION	9631	WINONA	MN
—	507-453	not yet reported which blocks →	QWEST CORPORATION	9631	WINONA	MN
—	507-454	not yet reported which blocks →	QWEST CORPORATION	9631	WINONA	MN
—	507-455	not yet reported which blocks →	QWEST CORPORATION	9631	OWATONNA	MN
—	507-456	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	OWATONNA	MN
—	507-457	not yet reported which blocks →	QWEST CORPORATION	9631	WINONA	MN
—	507-458	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WINONA	MN
—	507-459	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WINONA	MN
—	507-461	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	WASECA	MN
—	507-462	8XXX which blocks →	THE EASTON TELEPHONE COMPANY	1384	MINNESOTLK	MN
—	507-463	6XXX8XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NEW RICHLD	MN
—	507-464	8XXX which blocks →	BLUE EARTH VALLEY TEL. CO.	1358	GUCKEEN	MN
—	507-465	4XXX6XXX · 2 holders which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	NEW RICHLD	MN
—	507-467	not yet reported which blocks →	ACE TEL. ASSN. - MN	1345	LANESBORO	MN
—	507-468	3XXX6XXX7XXX8XXX · 2 holders which blocks →	CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK	1445	DUNDEE	MN
—	507-471	not yet reported which blocks →	ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - MN	1406	NO LESTER	MN
—	507-472	not yet reported which blocks →	LISMORE COOP. TEL. CO.	1419	LISMORE	MN
—	507-474	not yet reported which blocks →	ONVOY, LLC - MN	184D	WINONA	MN
—	507-477	not yet reported which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	HAYFIELD	MN
—	507-478	0XXX3XXX6XXX7XXX8XXX · 3 holders which blocks →	CENTURYTEL OF MINNESOTA, INC. DBA CENTURYLINK	1445	RUSHMORE	MN
—	507-482	not yet reported which blocks →	ACE TEL. ASSN. - MN	1345	BROWNSVL	MN
—	507-483	3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	ADRIAN	MN
—	507-485	not yet reported which blocks →	REDWOOD COUNTY TEL. CO.	1472	WOOD LAKE	MN
—	507-487	2XXX3XXX4XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	ARCO	MN
—	507-492	1XXX4XXX7XXX · 2 holders which blocks →	ONVOY, LLC - MN	184D	MADISON LK	MN
—	507-493	not yet reported which blocks →	MABEL TEL. COOP. CO. - MN	1421	MABEL	MN

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.