Apparatus

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sensors Mode-S transponder

7C6725

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UNR · DIAMOND DA-40 Club Star · operated by UNIVERSITY OF NEW SOUTH WALES

Hex
7C6725
Octal
37063445
Decimal
8,152,869
Country
AU
Tail
VH-UNR
Type
DA40
No current signal · last broadcast 3d ago
Flights observed
64
Distinct callsigns
1
Country
AU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7C6725.

Country allocation

The ICAO 24-bit address 7C6725 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
UNR - 64 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UNR - Jul 26, 03:40 UTCJul 26, 04:15 UTC35m
2026-07-26 UNR - Jul 26, 01:45 UTCJul 26, 02:15 UTC30m
2026-07-25 UNR BWU → BWU Jul 25, 02:40 UTCJul 25, 05:05 UTC2h 25m
2026-07-23 UNR - Jul 23, 00:50 UTCJul 23, 01:40 UTC50m
2026-07-22 UNR - Jul 22, 01:10 UTCJul 22, 02:15 UTC1h 5m
2026-07-21 UNR - Jul 21, 23:35 UTCJul 22, 00:10 UTC35m
2026-07-15 UNR BWU → BWU Jul 15, 08:25 UTCJul 15, 10:35 UTC2h 10m
2026-07-15 UNR BWU → BWU Jul 15, 04:20 UTCJul 15, 06:10 UTC1h 50m
2026-07-15 UNR - Jul 15, 02:30 UTCJul 15, 03:25 UTC55m
2026-07-15 UNR - Jul 15, 00:15 UTCJul 15, 00:55 UTC40m
2026-07-14 UNR BWU → BWU Jul 14, 03:30 UTCJul 14, 05:30 UTC2h 0m
2026-07-13 UNR BWU → BWU Jul 13, 00:01 UTCJul 13, 02:45 UTC2h 45m
2026-07-12 UNR BWU → BWU Jul 12, 03:20 UTCJul 12, 05:10 UTC1h 50m
2026-07-11 UNR BWU → BWU Jul 11, 23:55 UTCJul 12, 01:45 UTC1h 50m
2026-07-11 UNR - Jul 11, 06:15 UTCJul 11, 06:55 UTC40m
2026-07-11 UNR - Jul 11, 04:35 UTCJul 11, 05:10 UTC35m
2026-07-09 UNR BWU → BWU Jul 9, 03:25 UTCJul 9, 04:50 UTC1h 25m
2026-07-07 UNR BWU → BWU Jul 7, 23:40 UTCJul 8, 01:00 UTC1h 20m
2026-07-04 UNR - Jul 4, 04:00 UTCJul 4, 04:45 UTC45m
2026-07-04 UNR - Jul 4, 00:45 UTCJul 4, 02:00 UTC1h 15m
2026-07-03 UNR BWU → BWU Jul 3, 03:05 UTCJul 3, 03:55 UTC50m
2026-07-02 UNR BWU → BWU Jul 2, 08:30 UTCJul 2, 10:50 UTC2h 20m
2026-07-02 UNR - Jul 2, 01:20 UTCJul 2, 02:35 UTC1h 15m
2026-06-29 UNR BWU → BWU Jun 29, 03:14 UTCJun 29, 04:20 UTC1h 5m
2026-06-24 UNR - Jun 24, 05:24 UTCJun 24, 06:10 UTC45m
2026-06-24 UNR - Jun 24, 03:35 UTCJun 24, 04:10 UTC35m
2026-06-24 UNR BWU → BWU Jun 24, 00:09 UTCJun 24, 01:19 UTC1h 10m
2026-06-23 UNR BWU → BWU Jun 23, 00:50 UTCJun 23, 03:54 UTC3h 5m
2026-06-22 UNR - Jun 22, 03:54 UTCJun 22, 05:10 UTC1h 15m
2026-06-22 UNR BWU → BWU Jun 22, 00:29 UTCJun 22, 02:19 UTC1h 50m
2026-06-20 UNR BWU → BWU Jun 20, 00:04 UTCJun 20, 02:00 UTC1h 55m
2026-06-18 UNR BWU → BWU Jun 18, 23:00 UTCJun 19, 00:24 UTC1h 24m
2026-06-17 UNR - Jun 17, 05:10 UTCJun 17, 06:15 UTC1h 5m
2026-06-17 UNR - Jun 17, 03:35 UTCJun 17, 04:05 UTC30m
2026-06-16 UNR BWU → BWU Jun 16, 23:20 UTCJun 17, 01:20 UTC2h 0m
2026-06-16 UNR BWU → BWU Jun 16, 04:45 UTCJun 16, 07:05 UTC2h 20m
2026-06-16 UNR BWU → BWU Jun 16, 01:04 UTCJun 16, 03:05 UTC2h 0m
2026-06-15 UNR BWU → BWU Jun 15, 03:24 UTCJun 15, 03:55 UTC30m
2026-06-14 UNR BWU → BWU Jun 14, 03:25 UTCJun 14, 06:15 UTC2h 50m
2026-06-13 UNR BWU → BWU Jun 13, 03:05 UTCJun 13, 05:35 UTC2h 29m
2026-06-03 UNR BWU → BWU Jun 3, 03:55 UTCJun 3, 04:50 UTC55m
2026-06-02 UNR BWU → BWU Jun 2, 04:25 UTCJun 2, 05:10 UTC45m
2026-06-01 UNR BWU → BWU Jun 1, 01:50 UTCJun 1, 03:25 UTC1h 35m
2026-05-29 UNR - May 29, 03:55 UTCMay 29, 04:35 UTC40m
2026-05-29 UNR - May 29, 02:15 UTCMay 29, 02:55 UTC40m
2026-05-21 UNR BWU → BWU May 21, 04:05 UTCMay 21, 05:05 UTC1h 0m
2026-05-21 UNR BWU → BWU May 21, 00:45 UTCMay 21, 02:20 UTC1h 35m
2026-05-20 UNR BWU → BWU May 20, 02:10 UTCMay 20, 04:20 UTC2h 10m
2026-05-19 UNR BWU → BWU May 19, 23:00 UTCMay 20, 00:05 UTC1h 5m
2026-05-09 UNR - May 9, 05:30 UTCMay 9, 06:45 UTC1h 15m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the VH-UNR page for operator, model, and routing details .

Mode-S 7C6725 frequently asked

What is Mode-S code 7C6725?
7C6725 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UNR.
Where is Mode-S 7C6725 registered?
Mode-S code 7C6725 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6725 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6725, octal 37063445, decimal 8,152,869.
What flights does 7C6725 operate?
Mode-S 7C6725 has broadcast 1 distinct callsign, including UNR.