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 740
ONVOY, LLC - OH 56
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
2025-08-20 740-740 0XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C CHESAPEAKE OH
2023-07-05 740-713 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C MARTISFRRY OH
2023-07-05 740-714 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C KILBOURNE OH
2023-07-05 740-718 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C MILLERSPT OH
2023-05-15 740-712 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C ZANESVILLE OH
2020-11-24 740-793 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C BEAVER OH
2020-10-02 740-790 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MCARTHUR OH
2017-06-14 740-729 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ASHVILLE OH
2016-10-10 740-850 0XXX1XXX2XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C CENTERBURG OH
2016-05-12 740-665 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GRATIOT OH
2016-05-11 740-873 0XXX1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C HANOVER OH
2016-05-11 740-880 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C GRANVILLE OH
2016-05-11 740-890 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C ST LOUISVL OH
2016-04-07 740-690 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GAMBIER OH
2016-03-14 740-560 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C RIO GRANDE OH
2016-03-14 740-960 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C MCONNELSVL OH
2016-03-11 740-730 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C TORONTO OH
2016-03-10 740-871 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GNADENHTTN OH
2015-06-12 740-900 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C SOMERSET OH
2006-11-17 740-531 0XXX1XXX2XXX3XXX · 2 holders which blocks → ONVOY, LLC - OH 464C THORNVILLE OH
2002-04-23 740-214 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - OH 464C ROSEVILLE OH
2002-04-23 740-217 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C WALNUT OH
2002-04-23 740-224 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GRAYSVILLE OH
2002-04-23 740-240 0–9 XXXall 10 · 9 holders which blocks → ONVOY, LLC - OH 464C RUSHVILLE OH
2002-04-23 740-267 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - OH 464C LEWISVILLE OH
2002-04-23 740-299 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C CLARINGTON OH
2002-04-23 740-303 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C PHILO OH
2002-04-23 740-306 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - OH 464C GUYAN OH
2002-04-23 740-309 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - OH 464C BARNESVL OH
2002-04-23 740-318 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - OH 464C SUGARGROVE OH
2002-04-23 740-337 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C TORONTO OH
2002-04-23 740-402 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CONESVILLE OH
2002-04-23 740-419 0–9 XXXall 10 · 9 holders which blocks → ONVOY, LLC - OH 464C MILLEDGEVL OH
2002-04-23 740-470 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C SEDALIA OH
2002-04-23 740-488 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C JEFFERSNVL OH
2002-04-23 740-518 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C DRESDEN OH
2002-04-23 740-530 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C DUFFY OH
2002-04-23 740-563 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C MINGO JCT OH
2002-04-23 740-580 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - OH 464C SHAWNEE OH
2002-04-23 740-660 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C ARABIA OH
2002-04-23 740-661 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C FULTONHAM OH
2002-04-23 740-693 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OH 464C WLAFAYETTE OH
2002-04-23 740-720 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C NEWHOLLAND OH
2002-04-23 740-721 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C NEWLXINGTN OH
2002-04-23 740-761 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C BETHESDA OH
2002-04-23 740-786 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - OH 464C SOMERTON OH
2002-04-23 740-806 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - OH 464C CHESHIRE OH
2002-04-23 740-807 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C NEWMTMORAS OH
2002-04-23 740-841 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OH 464C NEWPORT OH
2002-04-23 740-847 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - OH 464C THORNVILLE 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.