NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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 567
ONVOY, LLC - OH 51
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
2026-05-07 567-481 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → ONVOY, LLC - OH 464C HOLLAND OH
2024-06-14 567-458 0XXX1XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C WILLARD OH
2024-01-25 567-440 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2023-09-26 567-428 2XXX which blocks → ONVOY, LLC - OH 464C PIONEER OH
2023-09-26 567-431 2XXX which blocks → ONVOY, LLC - OH 464C CRESTLINE OH
2023-09-15 567-427 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C LIMA OH
2023-08-17 567-417 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C SANDUSKY OH
2023-08-17 567-419 0XXX1XXX2XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C OAK HARBOR OH
2022-11-16 567-576 0XXX1XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - OH 464C ROCKFORD OH
2022-11-02 567-456 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2022-10-24 567-390 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C FINDLAY OH
2022-03-09 567-382 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OH 464C VAN WERT OH
2022-02-04 567-373 0XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - OH 464C SPENCERVL OH
2022-02-04 567-375 0XXX1XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - OH 464C WILSHIWREN OH
2021-09-03 567-365 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C BOWLNGGREN OH
2021-06-21 567-355 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GALION OH
2021-04-06 567-550 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MONTPELIER OH
2020-10-22 567-332 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C FINDLAY OH
2020-06-02 567-313 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CARDINGTON OH
2020-05-28 567-367 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C REPUBLIC OH
2020-05-28 567-399 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ALGER OH
2020-05-28 567-405 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C CALEDONIA OH
2020-05-26 567-350 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CAREY OH
2020-05-26 567-372 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C FOREST OH
2020-05-26 567-557 0XXX1XXX2XXX3XXX5XXX7XXX · 2 holders which blocks → ONVOY, LLC - OH 464C MILAN OH
2020-05-26 567-587 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MTBLANCHAD OH
2020-02-24 567-677 0XXX1XXX2XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OH 464C VAN BUREN OH
2019-05-17 567-722 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2018-10-10 567-861 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2017-11-01 567-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C OTTAWA OH
2017-02-28 567-888 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C LIMA OH
2017-02-09 567-777 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2016-10-10 567-381 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C LEXINGTON OH
2016-04-07 567-339 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C VENEDOCIA OH
2016-04-07 567-704 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C LYKENS OH
2016-03-30 567-347 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CAIRO OH
2016-03-30 567-430 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C BUTLER OH
2015-12-17 567-333 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C MANSFIELD OH
2015-03-20 567-585 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2014-12-23 567-406 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C WHITEHOUSE OH
2013-07-08 567-368 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2013-04-23 567-348 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C BOWLNGGREN OH
2012-12-31 567-200 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2010-03-25 567-288 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2010-01-25 567-331 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C PERRYSBURG OH
2009-11-12 567-225 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2009-03-02 567-743 1XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C NORWALK OH
2004-09-29 567-623 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - OH 464C HURON OH
2004-03-22 567-429 1XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C FINDLAY OH
— 567-338 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C BUCYRUS OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.