Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
—	608-783	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-784	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-785	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-786	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	WEST SALEM	WI
—	608-787	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-788	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-789	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-790	9XXX which blocks →	UNITED STATES CELLULAR - WI	6274	LA CROSSE	WI
—	608-791	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-792	none assigned yet which blocks →	UNITED STATES CELLULAR - WI	6274	LA CROSSE	WI
—	608-793	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-794	not yet reported which blocks →	FARMERS TEL. CO.	0880	BEETOWN	WI
—	608-795	3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC	0924	MAZOMANIE	WI
—	608-796	not yet reported which blocks →	BRIGHTSPEED OF WISCONSIN, LLC	0895	LA CROSSE	WI
—	608-797	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	LA CROSSE	WI
—	608-798	none assigned yet which blocks →	MID-PLAINS TEL., INC.	0881	CROSS PL	WI
—	608-799	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	LA CROSSE	WI
—	608-807	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	MADISON	WI
—	608-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	WI
—	608-820	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	MIDDLETON	WI
—	608-821	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-822	1XXX5XXX9XXX · 2 holders which blocks →	GRANTLAND TELECOM, INC.	0930	FENNIMORE	WI
—	608-823	8XXX which blocks →	BRIGHTSPEED OF MIDWEST WISCONSIN, LLC	0913	NORWALK	WI
—	608-824	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-825	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	SUNPRAIRIE	WI
—	608-826	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-827	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-828	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-829	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-831	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-832	7XXX which blocks →	MT. VERNON TEL. CO.	0917	MT VERNON	WI
—	608-833	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-834	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	SUNPRAIRIE	WI
—	608-835	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	OREGON	WI
—	608-836	not yet reported which blocks →	MID-PLAINS TEL., INC.	0881	MIDDLETON	WI
—	608-837	not yet reported which blocks →	FRONTIER NORTH INC. - WI	0886	SUNPRAIRIE	WI
—	608-838	1XXX which blocks →	FRONTIER NORTH INC. - WI	0886	MCFARLAND	WI
—	608-839	0XXX2XXX6XXX7XXX · 3 holders which blocks →	FRONTIER NORTH INC. - WI	0886	COTTAGEGRV	WI
—	608-841	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	MIDDLETON	WI
—	608-842	0XXX2XXX4XXX7XXX9XXX · 4 holders which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0922	DE FOREST	WI
—	608-845	not yet reported which blocks →	MT. VERNON TEL. CO.	0917	VERONA	WI
—	608-846	not yet reported which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0922	DE FOREST	WI
—	608-847	0XXX8XXX · 2 holders which blocks →	FRONTIER NORTH INC. - WI	0886	MAUSTON	WI
—	608-848	not yet reported which blocks →	MT. VERNON TEL. CO.	0917	VERONA	WI
—	608-849	not yet reported which blocks →	WAUNAKEE TEL. CO.	0968	WAUNAKEE	WI
—	608-850	0XXX7XXX9XXX · 2 holders which blocks →	WAUNAKEE TEL. CO.	0968	WAUNAKEE	WI
—	608-853	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MAUSTON	WI
—	608-854	not yet reported which blocks →	BRIGHTSPEED OF WESTERN WISCONSIN, LLC	0934	HAZELGREEN	WI
—	608-855	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	TDS METROCOM, LLC	520K	SPARTA	WI
—	608-857	not yet reported which blocks →	BRIGHTSPEED OF CENTRAL WISCONSIN, LLC	1159	MINDORO	WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.