NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 419
OHIO BELL TEL CO 114
FRONTIER NORTH, INC. - OH 114
BRIGHTSPEED OF NORTHWEST OHIO, INC. 114
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 100
NEW CINGULAR WIRELESS PCS, LLC - IL 52
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
— 419-838 1XXX3XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MOLINE OH
— 419-840 not yet reported which blocks → OHIO BELL TEL CO 9321 XXXXXXXXXX OH
— 419-841 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 SYLVANIA OH
— 419-842 4XXX which blocks → FRONTIER NORTH, INC. - OH 0615 SYLVANIA OH
— 419-843 0XXX which blocks → FRONTIER NORTH, INC. - OH 0615 SYLVANIA OH
— 419-844 not yet reported which blocks → ONVOY, LLC - OH 464C TOLEDO OH
— 419-845 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 CALEDONIA OH
— 419-846 2XXX5XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 CONGRESS OH
— 419-849 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WOODVILLE OH
— 419-851 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - OH 464C TOLEDO OH
— 419-852 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CELINA OH
— 419-853 5XXX6XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WEST SALEM OH
— 419-855 2XXX5XXX6XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 GENOA OH
— 419-858 not yet reported which blocks → ONVOY, LLC - OH 464C TOLEDO OH
— 419-859 not yet reported which blocks → BENTON RIDGE TEL. CO. 0590 BENTON RDG OH
— 419-861 not yet reported which blocks → OHIO BELL TEL CO 9321 HOLLAND OH
— 419-862 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 ELMORE OH
— 419-863 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DELPHOS OH
— 419-864 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 CARDINGTON OH
— 419-865 not yet reported which blocks → OHIO BELL TEL CO 9321 HOLLAND OH
— 419-866 not yet reported which blocks → OHIO BELL TEL CO 9321 HOLLAND OH
— 419-867 not yet reported which blocks → OHIO BELL TEL CO 9321 HOLLAND OH
— 419-868 0XXX which blocks → OHIO BELL TEL CO 9321 HOLLAND OH
— 419-869 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 8 holders which blocks → FRONTIER NORTH, INC. - OH 0615 REDHAW OH
— 419-871 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SANDUSKY OH
— 419-872 not yet reported which blocks → OHIO BELL TEL CO 9321 PERRYSBURG OH
— 419-873 3XXX5XXX6XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 PERRYSBURG OH
— 419-874 not yet reported which blocks → OHIO BELL TEL CO 9321 PERRYSBURG OH
— 419-875 0XXX1XXX2XXX3XXX8XXX · 5 holders which blocks → WINDSTREAM OHIO, LLC 0665 NEAPOLIS OH
— 419-876 none assigned yet which blocks → CONTINENTAL OF OHIO 0607 MILLERCITY OH
— 419-877 1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 WHITEHOUSE OH
— 419-878 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WATERVILLE OH
— 419-879 not yet reported which blocks → TSC COMMUNICATIONS, INC. - OH 0640 LIMA OH
— 419-882 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 SYLVANIA OH
— 419-883 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BUTLER OH
— 419-884 5XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LEXINGTON OH
— 419-885 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 SYLVANIA OH
— 419-886 6XXX7XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BELLVILLE OH
— 419-887 7XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 MAUMEE OH
— 419-889 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FINDLAY OH
— 419-891 not yet reported which blocks → OHIO BELL TEL CO 9321 MAUMEE OH
— 419-892 4XXX6XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LUCAS OH
— 419-893 not yet reported which blocks → OHIO BELL TEL CO 9321 MAUMEE OH
— 419-894 1XXX3XXX · 2 holders which blocks → ARCADIA TEL. CO. 0585 ARCADIA OH
— 419-895 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ADARIO OH
— 419-896 4XXX8XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 SHILOH OH
— 419-897 4XXX which blocks → OHIO BELL TEL CO 9321 MAUMEE OH
— 419-898 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 OAK HARBOR OH
— 419-899 not yet reported which blocks → SHERWOOD MUTUAL TEL. ASSN., INC. 0656 SHERWOOD OH
— 419-901 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY OH

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.