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 715
ONVOY, LLC - WI 23
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
2024-02-19 715-715 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C RHINELANDR WI
2022-11-14 715-300 0XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C BEAR CREEK WI
2021-07-15 715-992 0XXX8XXX · 2 holders which blocks → ONVOY, LLC - WI 225C MONTDU LAC WI
2021-07-14 715-734 2XXX4XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C STARPRAIRI WI
2020-12-21 715-624 0XXX2XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HAYWARD WI
2020-03-27 715-390 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C COLBY WI
2020-03-27 715-400 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C ATHENS WI
2020-03-27 715-710 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - WI 225C EDGAR WI
2020-01-27 715-999 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C RICE LAKE WI
2019-10-10 715-666 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C MARINETTE WI
2019-10-07 715-515 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - WI 225C LINDSEY WI
2019-10-07 715-910 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - WI 225C PITTSVILLE WI
2018-12-07 715-500 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C NEWRICHMND WI
2014-09-10 715-947 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - WI 225C SUPERIOR WI
2011-02-17 715-901 0XXX1XXX3XXX4XXX which blocks → ONVOY, LLC - WI 225C EAU CLAIRE WI
— 715-200 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - WI 225C OSSEO WI
— 715-565 4XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - WI 225C GLENWOODCY WI
— 715-601 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C MONDOVI WI
— 715-620 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX which blocks → ONVOY, LLC - WI 225C EAU CLAIRE WI
— 715-705 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C CHIPPEWFLS WI
— 715-727 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WI 225C EAU CLAIRE WI
— 715-750 0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WI 225C ANTIGO WI
— 715-979 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WI 225C ASHLAND WI

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.