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 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 740-934 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → OHIO BELL TEL CO 9321 GRAYSVILLE OH
— 740-935 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PORTSMOUTH OH
— 740-937 6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 HOPEDALE OH
— 740-941 6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WAVERLY OH
— 740-942 none assigned yet which blocks → FRONTIER NORTH, INC. - OH 0615 CADIZ OH
— 740-943 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 RICHWOOD OH
— 740-944 4XXX7XXX · 2 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 BLOOMINGDL OH
— 740-945 3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - OH 0615 SCIO OH
— 740-946 2XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 JEWETT OH
— 740-947 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 WAVERLY OH
— 740-948 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 MILLEDGEVL OH
— 740-949 0XXX4XXX6XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 POMEROY OH
— 740-950 not yet reported which blocks → OH
— 740-951 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 PATASKALA OH
— 740-957 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 DELAWARE OH
— 740-958 not yet reported which blocks → OH
— 740-959 not yet reported which blocks → OH
— 740-962 7XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MCONNELSVL OH
— 740-963 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PATASKALA OH
— 740-964 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 PATASKALA OH
— 740-965 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 SUNBURY OH
— 740-966 1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 JOHNSTOWN OH
— 740-967 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 JOHNSTOWN OH
— 740-968 5XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 FLUSHING OH
— 740-969 5XXX6XXX which blocks → FRONTIER NORTH, INC. - OH 0615 AMANDA OH
— 740-970 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PIKETON OH
— 740-971 0XXX2XXX4XXX5XXX6XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 DELAWARE OH
— 740-972 7XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 DELAWARE OH
— 740-973 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
— 740-974 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 LANCASTER OH
— 740-975 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
— 740-976 not yet reported which blocks → OH
— 740-977 2XXX6XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PIKETON OH
— 740-978 1XXX2XXX4XXX5XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 JACKSON OH
— 740-979 0XXX1XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 JACKSON OH
— 740-980 0XXX1XXX2XXX4XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C CENTERVL OH
— 740-981 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PORTSMOUTH OH
— 740-982 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 CROOKSVL OH
— 740-983 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 ASHVILLE OH
— 740-984 6XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 BEVERLY OH
— 740-985 not yet reported which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 CHESTER OH
— 740-986 0XXX1XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WILLIAMSPT OH
— 740-987 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 JUNCTIONCY OH
— 740-988 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 JACKSON OH
— 740-989 3XXX4XXX · 2 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 LTLHOCKING OH
— 740-991 0–9 XXXwhole prefix which blocks → FRONTIER NORTH, INC. - OH 0615 PORTSMOUTH OH
— 740-992 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 POMEROY OH
— 740-993 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CHILLICOTHE TEL. CO. 0597 CLARKSBURG OH
— 740-995 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CAMBRIDGE OH
— 740-998 9XXX which blocks → CHILLICOTHE TEL. CO. 0597 FRANKFORT OH

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.