NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
— 715-679 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH INC. - WI 0886 WAUSAU WI
— 715-682 not yet reported which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 ASHLAND WI
— 715-683 0XXX3XXX4XXX · 3 holders which blocks → BADGER TELECOM, INC. 0844 CHILI WI
— 715-684 none assigned yet which blocks → BALDWIN TELECOM, INC. 0846 BALDWIN WI
— 715-685 1XXX3XXX4XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 ASHLAND WI
— 715-686 1XXX6XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHERN WISCONSIN, LLC 0956 PRESQUE IS WI
— 715-687 6XXX which blocks → FRONTIER NORTH INC. - WI 0886 STRATFORD WI
— 715-688 none assigned yet which blocks → BALDWIN TELECOM, INC. 0846 BALDWIN WI
— 715-689 not yet reported which blocks → FARMERS INDEPENDENT TEL. CO. 0879 FALUN WI
— 715-691 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HATLEY WI
— 715-692 0XXX7XXX8XXX9XXX · 2 holders which blocks → MOSINEE TEL. CO. 0915 MOSINEE WI
— 715-693 not yet reported which blocks → MOSINEE TEL. CO. 0915 MOSINEE WI
— 715-694 not yet reported which blocks → TRI-COUNTY TEL. COOP., INC. 0960 PLEASANTVL WI
— 715-695 not yet reported which blocks → TRI-COUNTY TEL. COOP., INC. 0960 STRUM WI
— 715-696 8XXX which blocks → NIAGARA TEL. CO. 0920 SPREADEAGL WI
— 715-698 none assigned yet which blocks → BALDWIN TELECOM, INC. 0846 WOODVILLE WI
— 715-699 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAYWARD WI
— 715-700 not yet reported which blocks → WI
— 715-702 1XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOYCEVILLE WI
— 715-703 1XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOYD WI
— 715-704 1XXX6XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLFAX WI
— 715-705 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C CHIPPEWFLS WI
— 715-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 715-717 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → WISCONSIN BELL INC 9327 EAU CLAIRE WI
— 715-720 not yet reported which blocks → WISCONSIN BELL INC 9327 CHIPPEWFLS WI
— 715-723 not yet reported which blocks → WISCONSIN BELL INC 9327 CHIPPEWFLS WI
— 715-726 5XXX which blocks → WISCONSIN BELL INC 9327 CHIPPEWFLS WI
— 715-727 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WI 225C EAU CLAIRE WI
— 715-732 not yet reported which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 MARINETTE WI
— 715-735 not yet reported which blocks → BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 0924 MARINETTE WI
— 715-736 not yet reported which blocks → CTC TELCOM, INC. 7998 RICE LAKE WI
— 715-738 4XXX8XXX9XXX · 3 holders which blocks → WISCONSIN BELL INC 9327 CHIPPEWFLS WI
— 715-739 none assigned yet which blocks → CHEQUAMEGON COMMUNICATIONS COOPERATIVE, INC. 0860 DRUMMOND WI
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.