Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7C6DDB

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-VZH · BOEING 737-800 · operated by QANTAS AIRWAYS LIMITED

Hex
7C6DDB
Octal
37066733
Decimal
8,154,587
Country
AU
Tail
VH-VZH
Type
B738
Broadcasting now · callsign QFA841 · 2,750 ft
Flights observed
403
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:30 UTC

Current position

7C6DDB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C6DDB 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 20 distinct

Callsign Airline Flights Last seen
QFA161 - 9 2026-06-13
QFA166 Qantas 8 2026-07-19
QFA164 Qantas 8 2026-06-13
QFA857 - 6 2026-07-02
QFA856 - 6 2026-07-02
QFA545 - 6 2026-07-17
QFA163 Qantas 6 2026-05-26
QFA162 Qantas 6 2026-05-26
QFA147 - 6 2026-07-10
QFA938 Qantas 5 2026-04-16
QFA935 Qantas 5 2026-04-28
QFA501 Qantas 5 2026-07-05
QFA167 - 5 2026-07-15
QFA142 Qantas 5 2026-06-06
QFA849 Qantas 4 2026-06-10
QFA848 Qantas 4 2026-06-10
QFA776 - 4 2026-06-21
QFA749 Qantas 4 2026-06-01
QFA620 - 4 2026-06-24
QFA478 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA410 MEL → SYD Jul 26, 21:10 UTCJul 26, 22:20 UTC1h 10m
2026-07-26 QFA696 ADL → MEL Jul 26, 10:15 UTCJul 26, 11:20 UTC1h 5m
2026-07-26 QFA693 MEL → ADL Jul 26, 08:25 UTCJul 26, 09:20 UTC55m
2026-07-26 QFA627 BNE → MEL Jul 26, 04:30 UTCJul 26, 06:35 UTC2h 6m
2026-07-26 QFA522 SYD → BNE Jul 26, 02:00 UTCJul 26, 03:05 UTC1h 5m
2026-07-25 QFA418 MEL → SYD Jul 25, 22:10 UTCJul 25, 23:15 UTC1h 5m
2026-07-25 QFA690 ADL → MEL Jul 25, 08:00 UTCJul 25, 08:55 UTC55m
2026-07-25 QFA687 MEL → ADL Jul 25, 06:00 UTCJul 25, 07:00 UTC1h 0m
2026-07-25 QFA447 SYD → MEL Jul 25, 03:45 UTCJul 25, 04:50 UTC1h 5m
2026-07-25 QFA438 MEL → SYD Jul 25, 01:35 UTCJul 25, 02:35 UTC1h 0m
2026-07-24 QFA421 SYD → MEL Jul 24, 22:40 UTCJul 24, 23:55 UTC1h 15m
2026-07-24 QFA484 MEL → SYD Jul 24, 09:05 UTCJul 24, 10:15 UTC1h 10m
2026-07-24 QFA766 ADL → SYD Jul 24, 04:40 UTCJul 24, 08:10 UTC3h 30m
2026-07-23 QFA763 CBR → MEL Jul 23, 23:30 UTCJul 24, 03:00 UTC3h 30m
2026-07-23 QFA473 SYD → MEL Jul 23, 07:50 UTCJul 23, 09:00 UTC1h 10m
2026-07-23 QFA742 MEL → CBR Jul 23, 05:05 UTCJul 23, 06:30 UTC1h 25m
2026-07-23 QFA737 CBR → ADL Jul 23, 03:45 UTCJul 23, 04:10 UTC25m
2026-07-23 QFA737 CBR → ADL Jul 23, 02:20 UTCJul 23, 02:55 UTC35m
2026-07-22 QFA591 OOL → SYD Jul 22, 23:25 UTCJul 23, 00:35 UTC1h 10m
2026-07-22 QFA590 PER → ADL Jul 22, 21:30 UTCJul 22, 22:30 UTC1h 0m
2026-07-22 QFA533 BNE → SYD Jul 22, 04:20 UTCJul 22, 05:25 UTC1h 5m
2026-07-22 QFA522 SYD → BNE Jul 22, 02:00 UTCJul 22, 03:05 UTC1h 5m
2026-07-21 QFA428 MEL → SYD Jul 21, 23:55 UTCJul 22, 00:55 UTC1h 0m
2026-07-21 QFA409 SYD → MEL Jul 21, 21:15 UTCJul 21, 22:40 UTC1h 25m
2026-07-21 QFA480 PER → MEL Jul 21, 08:40 UTCJul 21, 09:45 UTC1h 5m
2026-07-21 QFA459 SYD → MEL Jul 21, 05:55 UTCJul 21, 07:10 UTC1h 15m
2026-07-21 QFA444 MEL → SYD Jul 21, 02:40 UTCJul 21, 03:40 UTC1h 0m
2026-07-21 QFA429 - Jul 21, 00:00 UTCJul 21, 01:20 UTC1h 20m
2026-07-20 QFA408 MEL → SYD Jul 20, 20:55 UTCJul 20, 22:10 UTC1h 15m
2026-07-20 QFA772 PER → MEL Jul 20, 10:05 UTCJul 20, 13:00 UTC2h 55m
2026-07-20 QFA769 MEL → PER Jul 20, 04:55 UTCJul 20, 08:50 UTC3h 55m
2026-07-20 QFA762 PER → MEL Jul 20, 00:20 UTCJul 20, 03:20 UTC3h 0m
2026-07-19 QFA941 BNE → PER Jul 19, 08:40 UTCJul 19, 13:35 UTC4h 55m
2026-07-19 QFA166 WLG → SYD Jul 19, 03:40 UTCJul 19, 05:00 UTC1h 20m
2026-07-18 QFA166 WLG → SYD Jul 18, 23:40 UTCJul 18, 23:55 UTC15m
2026-07-18 QFA165 BNE → ROR Jul 18, 00:45 UTCJul 18, 06:10 UTC5h 26m
2026-07-17 QFA500 - Jul 17, 20:20 UTCJul 17, 21:30 UTC1h 10m
2026-07-17 QFA545 BNE → SYD Jul 17, 08:30 UTCJul 17, 09:45 UTC1h 15m
2026-07-17 QFA536 SYD → BNE Jul 17, 05:30 UTCJul 17, 06:45 UTC1h 15m
2026-07-16 QFA642 PER → SYD Jul 16, 22:25 UTCJul 17, 02:10 UTC3h 45m
2026-07-16 QFA943 - Jul 16, 14:50 UTCJul 16, 15:19 UTC30m
2026-07-16 QFA943 - Jul 16, 10:35 UTCJul 16, 12:34 UTC2h 0m
2026-07-15 QFA58 BNE → BNE Jul 15, 23:25 UTCJul 16, 06:15 UTC6h 50m
2026-07-15 QFA134 - Jul 15, 04:00 UTCJul 15, 07:35 UTC3h 35m
2026-07-15 QFA167 - Jul 15, 02:30 UTCJul 15, 02:50 UTC20m
2026-07-14 QFA167 - Jul 14, 23:40 UTCJul 15, 00:15 UTC35m
2026-07-14 QFA168 - Jul 14, 18:45 UTCJul 14, 22:15 UTC3h 30m
2026-07-14 QFA169 MEL → CHC Jul 14, 09:50 UTCJul 14, 12:50 UTC3h 0m
2026-07-14 QFA178 - Jul 14, 03:30 UTCJul 14, 06:45 UTC3h 15m
2026-07-13 QFA177 - Jul 13, 23:10 UTCJul 14, 01:40 UTC2h 30m

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-VZH page for operator, model, and routing details .

Mode-S 7C6DDB frequently asked

What is Mode-S code 7C6DDB?
7C6DDB is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZH.
Where is Mode-S 7C6DDB registered?
Mode-S code 7C6DDB is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DDB broadcasting right now?
Yes. Mode-S 7C6DDB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DDB, octal 37066733, decimal 8,154,587.
What flights does 7C6DDB operate?
Mode-S 7C6DDB has broadcast 20 distinct callsigns, including QFA161, QFA166, QFA164, QFA857, QFA856.