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 320

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
—	320-543	5XXX6XXX · 2 holders which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	HOWARDLAKE	MN
—	320-547	1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	QWEST CORPORATION	9631	SWANVILLE	MN
—	320-548	not yet reported which blocks →	MELROSE TEL. CO.	1430	ST MARTIN	MN
—	320-554	not yet reported which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	VILLARD	MN
—	320-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	MN
—	320-556	none assigned yet which blocks →	BENTON COOP. TEL. CO.	1356	BOCK	MN
—	320-558	1XXX3XXX7XXX8XXX · 3 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	CLEARWATER	MN
—	320-562	5XXX7XXX9XXX · 3 holders which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	STEWART	MN
—	320-563	not yet reported which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	WHEATON	MN
—	320-564	not yet reported which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	GRANITEFLS	MN
—	320-567	not yet reported which blocks →	FEDERATED TEL. COOP.	1390	DANVERS	MN
—	320-568	not yet reported which blocks →	FARMERS MUTUAL TEL. CO.	1389	BELLINGHAM	MN
—	320-573	not yet reported which blocks →	UPSALA COOP. TEL. ASSN.	1494	UPSALA	MN
—	320-579	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OLIVIA	MN
—	320-582	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HUTCHINSON	MN
—	320-583	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	HUTCHINSON	MN
—	320-584	2XXX3XXX4XXX9XXX · 4 holders which blocks →	QWEST CORPORATION	9631	ROYALTON	MN
—	320-585	not yet reported which blocks →	FEDERATED TELEPHONE COOPERATIVE - MN	2629	MORRIS	MN
—	320-587	not yet reported which blocks →	HUTCHINSON TEL. CO.	1409	HUTCHINSON	MN
—	320-589	5XXX which blocks →	QWEST CORPORATION	9631	MORRIS	MN
—	320-592	4XXX6XXX7XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	MCGRATH	MN
—	320-593	not yet reported which blocks →	HUTCHINSON TELECOMMUNICATIONS, INC.	4602	LITCHFIELD	MN
—	320-594	not yet reported which blocks →	CENTURYLINK OF MINNESOTA, INC.	1456	BROWERVL	MN
—	320-595	0XXX1XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - MN	184D	PIERZ	MN
—	320-596	not yet reported which blocks →	FEDERATED TEL. COOP.	1390	CORRELL	MN
—	320-597	not yet reported which blocks →	MELROSE TEL. CO.	1430	RICHMOND	MN
—	320-598	not yet reported which blocks →	FRONTIER COMMUNICATIONS OF MINNESOTA, INC.	1367	MADISON	MN
—	320-599	3XXX6XXX7XXX · 3 holders which blocks →	MID STATE TEL. CO. DBA KMP TEL. CO.	1413	PENNOCK	MN
—	320-605	not yet reported which blocks →				MN
—	320-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MN
—	320-612	not yet reported which blocks →				MN
—	320-616	0XXX1XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9631	LITTLE FLS	MN
—	320-629	not yet reported which blocks →	QWEST CORPORATION	9631	PINE CITY	MN
—	320-630	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	LITTLE FLS	MN
—	320-631	6XXX which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7770	LITTLE FLS	MN
—	320-632	not yet reported which blocks →	QWEST CORPORATION	9631	LITTLE FLS	MN
—	320-634	6XXX7XXX8XXX · 3 holders which blocks →	QWEST CORPORATION	9631	GLENWOOD	MN
—	320-635	not yet reported which blocks →	ONVOY, LLC - MN	184D	LITTLE FLS	MN
—	320-650	not yet reported which blocks →	QWEST CORPORATION	9631	ST CLOUD	MN
—	320-651	not yet reported which blocks →				MN
—	320-654	not yet reported which blocks →	QWEST CORPORATION	9631	ST CLOUD	MN
—	320-655	none assigned yet which blocks →	BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC	0950	W DANBURY	MN
—	320-656	not yet reported which blocks →	QWEST CORPORATION	9631	ST CLOUD	MN
—	320-664	2XXX3XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	LK LILLIAN	MN
—	320-668	not yet reported which blocks →	FARMERS MUTUAL TEL. CO.	1389	MARIETTA	MN
—	320-669	2XXX5XXX which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	CLARKFIELD	MN
—	320-676	not yet reported which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	ISLE	MN
—	320-677	not yet reported which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	HERMAN	MN
—	320-679	not yet reported which blocks →	QWEST CORPORATION	9631	MORA	MN
—	320-684	3XXX5XXX6XXX8XXX · 2 holders which blocks →	CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN	1123	MALMO	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.