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
— 740-934 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 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.