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 989
ONVOY, LLCV - MI 46
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2023-07-28 989-519 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C GLADWIN MI
2023-07-28 989-523 0XXX1XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLCV - MI 543C BAD AXE MI
2023-06-30 989-452 3XXX4XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C WHITTEMORE MI
2023-06-09 989-378 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C MIDLAND MI
2021-07-02 989-380 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLCV - MI 543C BAY PORT MI
2021-06-25 989-376 0XXX1XXX2XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C ATLANTA MI
2021-06-25 989-417 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLCV - MI 543C EAST TAWAS MI
2021-06-25 989-446 2XXX4XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C HALE MI
2021-06-25 989-458 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C MAPLE RPD MI
2021-06-25 989-483 3XXX4XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C RIVERDALE MI
2021-06-25 989-504 2XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C ST CHARLES MI
2021-06-25 989-508 2XXX5XXX8XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C STANTON MI
2021-06-16 989-425 2XXX4XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C MILLINGTON MI
2021-06-16 989-457 0XXX4XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C OSCODA MI
2021-01-08 989-557 2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C HIGGINS LK MI
2021-01-08 989-788 2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C SIXTYLAKES MI
2020-10-23 989-360 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C HEMLOCK MI
2020-09-29 989-809 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C SANFORD MI
2018-09-25 989-589 0XXX1XXX2XXX5XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C CARO MI
2018-02-20 989-898 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C MIDLAND MI
2017-12-22 989-270 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2017-12-20 989-900 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2016-06-30 989-338 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C CARSONCITY MI
2016-03-14 989-264 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C MIDLAND MI
2016-03-07 989-267 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C ST HELEN MI
2016-03-02 989-260 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C EAST TAWAS MI
2015-10-09 989-800 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C LUPTON MI
2015-09-28 989-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C REESE MI
2015-09-16 989-300 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C MCBRIDES MI
2015-09-16 989-500 0XXX2XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C FENWICK MI
2015-08-19 989-999 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLCV - MI 543C BIRCH RUN MI
2014-10-06 989-250 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C ATLANTA MI
2014-10-06 989-299 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C FOWLERPWMO MI
2014-10-06 989-487 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C FARWELL MI
2014-10-06 989-559 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C CASS CITY MI
2012-10-22 989-355 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2010-12-23 989-502 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C FRANKENMTH MI
2010-04-02 989-702 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2010-02-19 989-455 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C VASSAR MI
2009-02-06 989-402 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C BAY CITY MI
2008-10-28 989-447 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C ST CHARLES MI
— 989-256 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C GLADWIN MI
— 989-349 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLCV - MI 543C BIRCH RUN MI
— 989-577 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
— 989-704 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLCV - MI 543C SEBEWAING MI
— 989-819 1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C CASEVILLE MI

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.