NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

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, last 30 days
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 419-406 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PAYNE OH
— 419-407 0XXX5XXX6XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-408 3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FINDLAY OH
— 419-409 2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BOWLNGGREN OH
— 419-410 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
— 419-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 419-412 not yet reported which blocks → SPOK, INC. 6630 FINDLAY OH
— 419-414 not yet reported which blocks → SPOK, INC. 6630 FREMONT OH
— 419-418 1XXX4XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-420 4XXX5XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-421 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-422 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-423 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-424 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-425 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-426 none assigned yet which blocks → FRONTIER NORTH, INC. - OH 0615 ATTICA OH
— 419-427 not yet reported which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-428 1XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 EVANSPORT OH
— 419-429 2XXX9XXX which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
— 419-433 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 HURON OH
— 419-435 not yet reported which blocks → OHIO BELL TEL CO 9321 FOSTORIA OH
— 419-436 3XXX7XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 FOSTORIA OH
— 419-438 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DEFIANCE OH
— 419-439 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DEFIANCE OH
— 419-440 not yet reported which blocks → SPOK, INC. 6630 TOLEDO OH
— 419-441 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WATERVILLE OH
— 419-442 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-443 5XXX6XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 TIFFIN OH
— 419-444 not yet reported which blocks → SPOK, INC. 6630 TOLEDO OH
— 419-445 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ARCHBOLD OH
— 419-446 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ARCHBOLD OH
— 419-447 not yet reported which blocks → OHIO BELL TEL CO 9321 TIFFIN OH
— 419-448 not yet reported which blocks → OHIO BELL TEL CO 9321 TIFFIN OH
— 419-449 not yet reported which blocks → SPOK, INC. 6630 TOLEDO OH
— 419-450 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOLEDO OH
— 419-451 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PIONEER OH
— 419-452 0XXX2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → WINDSTREAM OHIO, LLC 0665 CHESTERFLD OH
— 419-453 not yet reported which blocks → OTTOVILLE MUTUAL TEL. CO. 0650 OTTOVILLE OH
— 419-454 1XXX5XXX6XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BLOOMDALE OH
— 419-455 0XXX1XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 TIFFIN OH
— 419-456 not yet reported which blocks → HANSON COMMUNICATIONS OF OHIO, LLC-ORWELL 0649 GILBOA OH
— 419-457 1XXX5XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 RISINGSUN OH
— 419-458 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 WHARTON OH
— 419-459 2XXX3XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF MICHIGAN, INC. - OH 4418 COONEY OH
— 419-460 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
— 419-461 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
— 419-462 9XXX which blocks → FRONTIER NORTH, INC. - OH 0615 GALION OH
— 419-463 2XXX5XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREMONT OH
— 419-465 0XXX1XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MONROEVL OH
— 419-466 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.