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 614
OHIO BELL TEL CO 254
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 96
AERIAL COMMUNICATIONS, INC. 89
NEW CINGULAR WIRELESS PCS, LLC - IL 46
PAETEC ITEL, LLC 44
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
— 614-659 2XXX5XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-662 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LOCKBOURNE OH
— 614-664 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
— 614-668 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
— 614-669 2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LOCKBOURNE OH
— 614-675 none assigned yet which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 ALTON OH
— 614-677 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-679 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
— 614-684 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HILLIARD OH
— 614-686 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 HARRISBURG OH
— 614-688 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-690 not yet reported which blocks → SPOK, INC. 6630 ALTON OH
— 614-691 not yet reported which blocks → SPOK, INC. 6630 ALTON OH
— 614-692 not yet reported which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
— 614-693 not yet reported which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
— 614-700 not yet reported which blocks → OH
— 614-708 0–9 XXXall 10 · 4 holders which blocks → FIRST COMMUNICATIONS, LLC 460K GAHANNA OH
— 614-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 614-717 3XXX5XXX8XXX which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-718 not yet reported which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-719 9XXX which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-722 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-723 9XXX which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-724 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-726 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 DUBLIN OH
— 614-727 not yet reported which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 COLUMBUS OH
— 614-728 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-729 2XXX8XXX · 2 holders which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 REYNOLDSBG OH
— 614-730 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 COLUMBUS OH
— 614-731 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 COLUMBUS OH
— 614-732 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K COLUMBUS OH
— 614-733 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 PLAIN CITY OH
— 614-734 4XXX which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-736 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBUS OH
— 614-737 1XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 COLUMBUS OH
— 614-738 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
— 614-741 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEW ALBANY OH
— 614-744 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-747 4XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBUS OH
— 614-748 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 LOCKBOURNE OH
— 614-750 none assigned yet which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 GAHANNA OH
— 614-751 not yet reported which blocks → OHIO BELL TEL CO 9321 REYNOLDSBG OH
— 614-752 not yet reported which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
— 614-755 not yet reported which blocks → OHIO BELL TEL CO 9321 REYNOLDSBG OH
— 614-757 not yet reported which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 DUBLIN OH
— 614-758 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEW ALBANY OH
— 614-759 not yet reported which blocks → OHIO BELL TEL CO 9321 REYNOLDSBG OH
— 614-760 not yet reported which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-761 not yet reported which blocks → OHIO BELL TEL CO 9321 DUBLIN OH
— 614-762 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 REYNOLDSBG 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.