NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, all time — NPA 715
NEW CINGULAR WIRELESS PCS, LLC - IL 100
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 99
FRONTIER NORTH INC. - WI 55
WISCONSIN BELL INC 41
CHARTER IP ENABLED SERVICES, LLC 36
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 715-742 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 CORNUCOPIA WI
— 715-743 not yet reported which blocks → BADGER TELECOM, INC. 0844 NEILLSVL WI
— 715-744 5XXX7XXX8XXX · 2 holders which blocks → PRICE COUNTY INFORMATION SYSTEMS, INC. - WI 3706 PARK FALLS WI
— 715-745 0XXX3XXX5XXX7XXX · 4 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 CECIL WI
— 715-746 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 BENOIT WI
— 715-747 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 LA POINTE WI
— 715-748 not yet reported which blocks → MIDWAY TEL. CO. 0909 MEDFORD WI
— 715-749 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → WISCONSIN BELL INC 9327 ROBERTS WI
— 715-750 0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WI 225C ANTIGO WI
— 715-751 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WISCOSNRPD WI
— 715-752 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 BEAR CREEK WI
— 715-754 3XXX8XXX which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 MARION WI
— 715-755 5XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC 0950 DRESSER WI
— 715-756 3XXX5XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 NEOPIT WI
— 715-757 0XXX1XXX5XXX7XXX · 4 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0841 TWINBRIDGE WI
— 715-758 9XXX which blocks → BONDUEL TEL. CO. 0851 BONDUEL WI
— 715-759 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0841 AMBERG WI
— 715-760 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ROBERTS WI
— 715-761 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICE LAKE WI
— 715-762 none assigned yet which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 PARK FALLS WI
— 715-763 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 GRANDVIEW WI
— 715-764 0XXX1XXX4XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHETEK WI
— 715-765 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 MASON WI
— 715-766 4XXX5XXX6XXX7XXX · 3 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 SPRINGBRK WI
— 715-767 8XXX which blocks → BRIGHTSPEED OF NORTHERN WISCONSIN, LLC 0956 OGEMA WI
— 715-768 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALSAMLAKE WI
— 715-769 1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK 1155 BUTTERNUT WI
— 715-770 0XXX which blocks → TERRA NOVA TELECOM INC. 145J EAU CLAIRE WI
— 715-772 none assigned yet which blocks → WEST WISCONSIN TELCOM COOP., INC. 0971 SPRINGLAKE WI
— 715-774 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 PORT WING WI
— 715-775 not yet reported which blocks → NEW CELL DBA CELLCOM 6692 MARINETTE WI
— 715-776 1XXX6XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERCER WI
— 715-777 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PELICAN LK WI
— 715-778 not yet reported which blocks → SPRING VALLEY TEL. CO., INC. 0953 SPRING VLY WI
— 715-779 1XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 BAYFIELD WI
— 715-783 1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RIB LAKE WI
— 715-784 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRANDON WI
— 715-785 5XXX which blocks → MIDWAY TEL. CO. 0909 MEDFORD WI
— 715-787 0XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 GRESHAM WI
— 715-789 0XXX4XXX5XXX7XXX · 4 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0841 HARMONY WI
— 715-791 1XXX4XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEBB LAKE WI
— 715-792 not yet reported which blocks → HAGER TELECOM, INC. 0889 HAGER CITY WI
— 715-793 0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 BOWLER WI
— 715-794 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 NAMEKGONLK WI
— 715-795 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 BARNES WI
— 715-796 1XXX3XXX4XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC 0950 HAMMOND WI
— 715-797 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 EAU CLAIRE WI
— 715-798 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 CABLE WI
— 715-799 2XXX which blocks → FRONTIER COMMUNICATIONS OF WISCONSIN LLC 0964 KESHENA WI
— 715-805 not yet reported which blocks → METRO SOUTHWEST PCS, LLP 9759 MERRILL 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.