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 740
FRONTIER NORTH, INC. - OH 123
OHIO BELL TEL CO 105
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 82
AERIAL COMMUNICATIONS, INC. 65
LEVEL 3 COMMUNICATIONS, LLC - OH 63
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 740-817 5XXX6XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 JOHNSTOWN OH
— 740-819 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
— 740-820 not yet reported which blocks → MINFORD TEL. CO. 0634 MINFD SKDL OH
— 740-821 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 PORTSMOUTH OH
— 740-823 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LOGAN OH
— 740-824 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WARSAW OH
— 740-826 3XXX5XXX which blocks → FRONTIER NORTH, INC. - OH 0615 NEWCONCORD OH
— 740-828 5XXX6XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 FRAZEYSBG OH
— 740-829 0XXX1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 CONESVILLE OH
— 740-832 1XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CADIZ OH
— 740-833 0XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 DELAWARE OH
— 740-837 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 LONDON OH
— 740-838 3XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 SUMMERFLD OH
— 740-843 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - OH 0615 PORTLAND OH
— 740-844 1XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 NORWICH OH
— 740-845 4XXX8XXX9XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 LONDON OH
— 740-849 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 FULTONHAM OH
— 740-852 not yet reported which blocks → OHIO BELL TEL CO 9321 LONDON OH
— 740-857 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - OH 0615 RESACA OH
— 740-858 7XXX8XXX which blocks → FRONTIER NORTH, INC. - OH 0615 PORTSMOUTH OH
— 740-859 3XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 TILTONSVL OH
— 740-862 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 BALTIMORE OH
— 740-865 1XXX5XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 NEWMTMORAS OH
— 740-867 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 CHESAPEAKE OH
— 740-869 8XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MTSTERLING OH
— 740-872 0XXX2XXX7XXX8XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 NORWICH OH
— 740-874 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → OHIO BELL TEL CO 9321 SEDALIA OH
— 740-881 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 RATHBONE OH
— 740-884 0XXX8XXX9XXX · 3 holders which blocks → CHILLICOTHE TEL. CO. 0597 RICHMONDL OH
— 740-886 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 CHESAPEAKE OH
— 740-887 0XXX7XXX · 2 holders which blocks → CHILLICOTHE TEL. CO. 0597 LONDONDRRY OH
— 740-888 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7443 CHESHIRCTR OH
— 740-892 1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 UTICAHOMER OH
— 740-893 1XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 CROTON OH
— 740-894 2XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 CHESAPEAKE OH
— 740-895 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C WSNGTNCTHS OH
— 740-896 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → FRONTIER NORTH, INC. - OH 0615 LOWELL OH
— 740-897 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 PIKETON OH
— 740-902 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 COSHOCTON OH
— 740-906 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 NEWLXINGTN OH
— 740-908 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F LONDON OH
— 740-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 740-912 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WAVERLY OH
— 740-922 not yet reported which blocks → OHIO BELL TEL CO 9321 UHRICHSVL OH
— 740-924 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ALEXANDRIA OH
— 740-925 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 GALLIPOLIS OH
— 740-926 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks → OHIO BELL TEL CO 9321 BEALLSVL OH
— 740-927 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 PATASKALA OH
— 740-928 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 HEBRON OH
— 740-929 6XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 HEBRON 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.