NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 989
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 989-665 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → MICHIGAN BELL TEL CO 9323 GAGETOWN MI
— 989-666 9XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 OWOSSO MI
— 989-667 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 BAY CITY MI
— 989-670 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARO MI
— 989-671 7XXX which blocks → MICHIGAN BELL TEL CO 9323 BAY CITY MI
— 989-672 9XXX which blocks → BRIGHTSPEED OF MICHIGAN, LLC 0702 CARO MI
— 989-673 not yet reported which blocks → BRIGHTSPEED OF MICHIGAN, LLC 0702 CARO MI
— 989-674 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → MICHIGAN BELL TEL CO 9323 UNIONVILLE MI
— 989-678 1XXX7XXX9XXX · 3 holders which blocks → MICHIGAN BELL TEL CO 9323 OWENDALE MI
— 989-681 1XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 ST LOUIS MI
— 989-682 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - MI 0695 MAPLE RPD MI
— 989-683 0XXX1XXX4XXX7XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 KINGSTON MI
— 989-684 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 BAY CITY MI
— 989-685 0XXX1XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → FRONTIER MIDSTATES, INC. - MI 0681 ROSE CITY MI
— 989-686 not yet reported which blocks → MICHIGAN BELL TEL CO 9323 BAY CITY MI
— 989-687 1XXX4XXX8XXX · 3 holders which blocks → WOLVERINE TEL. CO. 0738 SANFORD MI
— 989-689 1XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF MICHIGAN, LLC 0702 HOPE MI
— 989-690 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUBBARDSTN MI
— 989-691 7XXX which blocks → MICHIGAN BELL TEL CO 9323 AKRON MI
— 989-692 1XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → MICHIGAN BELL TEL CO 9323 FREELAND MI
— 989-693 2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → MICHIGAN BELL TEL CO 9323 FAIRGROVE MI
— 989-695 0XXX which blocks → MICHIGAN BELL TEL CO 9323 FREELAND MI
— 989-697 0XXX1XXX2XXX6XXX7XXX · 4 holders which blocks → MICHIGAN BELL TEL CO 9323 LINWOOD MI
— 989-698 6XXX which blocks → PAETEC ITEL, LLC 829J MIDLAND MI
— 989-700 not yet reported which blocks → MI
— 989-701 1XXX2XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESTBRANCH MI
— 989-704 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLCV - MI 543C SEBEWAING MI
— 989-705 0XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - MI 0695 GAYLORD MI
— 989-707 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAPLE RPD MI
— 989-708 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → METROPCS, INC. 5562 MIDLAND MI
— 989-710 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAYLING MI
— 989-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MI
— 989-714 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SAGINAW MI
— 989-717 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SAGINAW MI
— 989-721 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J OWOSSO MI
— 989-722 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 BAD AXE MI
— 989-723 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 OWOSSO MI
— 989-724 0XXX1XXX2XXX3XXX4XXX8XXX · 6 holders which blocks → FRONTIER NORTH, INC. - MI 0695 HARRISVL MI
— 989-725 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 OWOSSO MI
— 989-727 0XXX1XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 HUBBARD LK MI
— 989-728 7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF MICHIGAN, LLC 0702 HALE MI
— 989-729 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 OWOSSO MI
— 989-730 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 SAGINAW MI
— 989-731 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 GAYLORD MI
— 989-732 not yet reported which blocks → FRONTIER NORTH, INC. - MI 0695 GAYLORD MI
— 989-733 0XXX1XXX3XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 ONAWAY MI
— 989-734 1XXX which blocks → FRONTIER NORTH, INC. - MI 0695 ROGERSCITY MI
— 989-735 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF MICHIGAN, LLC 0702 GLENNIE MI
— 989-736 0XXX2XXX5XXX · 3 holders which blocks → FRONTIER NORTH, INC. - MI 0695 LINCOLN MI
— 989-737 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SAGINAW MI

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.