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 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
— 419-577 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NORWALK OH
— 419-578 8XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-579 1XXX5XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 NAPOLEON OH
— 419-581 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7158 FINDLAY OH
— 419-582 0XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - OH 0615 YORKSHIRE OH
— 419-583 3XXX5XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 WAUSEON OH
— 419-584 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 CELINA OH
— 419-585 1XXX4XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 REPUBLIC OH
— 419-586 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 CELINA OH
— 419-587 none assigned yet which blocks → CONTINENTAL OF OHIO 0607 GROVERHILL OH
— 419-588 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 BERLIN HTS OH
— 419-589 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-591 6XXX8XXX9XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 NAPOLEON OH
— 419-592 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 NAPOLEON OH
— 419-593 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
— 419-594 1XXX which blocks → OAKWOOD TELEPHONE CO. 0645 OAKWOOD OH
— 419-595 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 NEW RIEGEL OH
— 419-596 2XXX which blocks → CONTINENTAL OF OHIO 0607 CONTINNTAL OH
— 419-598 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 GERALD OH
— 419-599 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 NAPOLEON OH
— 419-609 6XXX7XXX8XXX which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-610 0XXX2XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 MANSFIELD OH
— 419-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 419-612 0XXX1XXX2XXX4XXX5XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 MANSFIELD OH
— 419-618 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TIFFIN OH
— 419-619 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FOSTORIA OH
— 419-620 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 TOLEDO OH
— 419-621 not yet reported which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-622 5XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 SCOTT OH
— 419-623 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 VAN WERT OH
— 419-624 not yet reported which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-625 not yet reported which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-626 not yet reported which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-627 not yet reported which blocks → OHIO BELL TEL CO 9321 SANDUSKY OH
— 419-628 5XXX6XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MINSTER OH
— 419-629 5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 NEW BREMEN OH
— 419-630 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 BRYAN OH
— 419-633 none assigned yet which blocks → FRONTIER NORTH, INC. - OH 0615 BRYAN OH
— 419-634 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ADA OH
— 419-635 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 PT CLINTON OH
— 419-636 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 BRYAN OH
— 419-637 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 GIBSONBURG OH
— 419-638 4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 HELENA OH
— 419-639 1XXX4XXX5XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 GREEN SPG OH
— 419-640 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 TOLEDO OH
— 419-641 1XXX7XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 CAIRO OH
— 419-642 1XXX8XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 GOMER OH
— 419-643 1XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BEAVERDAM OH
— 419-644 5XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 METAMORA OH
— 419-645 not yet reported which blocks → TEL SERVICE CO. 0659 CRIDERSVL 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.