Apparatus

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sensors Mode-S transponder

7C56B7

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-REX · BOEING 737-800 · operated by VIRGIN AUSTRALIA AIRLINES PTY LTD

Hex
7C56B7
Octal
37053267
Decimal
8,148,663
Country
AU
Tail
VH-REX
Type
B738
No current signal · last broadcast 8h ago
Flights observed
173
Distinct callsigns
20
Country
AU
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 7C56B7.

Country allocation

The ICAO 24-bit address 7C56B7 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
VOZ744 Virgin Australia 4 2026-05-08
VOZ557 Virgin Australia 4 2026-04-17
VOZ516 Virgin Australia 4 2026-05-23
VOZ509 Virgin Australia 4 2026-05-22
VOZ917 Virgin Australia 3 2026-05-29
VOZ743 Virgin Australia 3 2026-05-08
VOZ700 Virgin Australia 3 2026-04-17
VOZ500 Virgin Australia 3 2026-05-19
VOZ259 Virgin Australia 3 2026-05-13
VOZ247 Virgin Australia 3 2026-05-24
VOZ1690 Virgin Australia 3 2026-05-14
VOZ1687 Virgin Australia 3 2026-05-14
VOZ883 Virgin Australia 2 2026-05-29
VOZ819 Virgin Australia 2 2026-05-27
VOZ816 Virgin Australia 2 2026-05-18
VOZ594 Virgin Australia 2 2026-04-27
VOZ558 Virgin Australia 2 2026-04-23
VOZ551 Virgin Australia 2 2026-04-22
VOZ534 Virgin Australia 2 2026-05-20
VOZ525 Virgin Australia 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 VOZ785 BNE → CNS May 30, 04:00 UTCMay 30, 05:25 UTC1h 25m
2026-05-29 VOZ917 SYD → BNE May 29, 22:15 UTCMay 29, 23:20 UTC1h 5m
2026-05-29 VOZ883 MEL → SYD May 29, 09:20 UTCMay 29, 10:20 UTC1h 0m
2026-05-29 VOZ692 PER → MEL May 29, 05:05 UTCMay 29, 08:05 UTC3h 0m
2026-05-28 VOZ681 MEL → PER May 28, 23:35 UTCMay 29, 03:55 UTC4h 20m
2026-05-28 VOZ726 OOL → MEL May 28, 20:10 UTCMay 28, 22:05 UTC1h 55m
2026-05-28 VOZ529 SYD → OOL May 28, 05:35 UTCMay 28, 06:40 UTC1h 5m
2026-05-28 VOZ520 OOL → SYD May 28, 02:45 UTCMay 28, 03:50 UTC1h 5m
2026-05-28 VOZ515 SYD → OOL May 28, 00:40 UTCMay 28, 01:45 UTC1h 5m
2026-05-27 VOZ819 MEL → SYD May 27, 22:15 UTCMay 27, 23:30 UTC1h 15m
2026-05-24 VOZ248 ADL → MEL May 24, 12:30 UTCMay 24, 13:30 UTC1h 0m
2026-05-24 VOZ247 MEL → ADL May 24, 10:30 UTCMay 24, 11:30 UTC1h 0m
2026-05-24 VOZ870 SYD → MEL May 24, 07:35 UTCMay 24, 09:00 UTC1h 25m
2026-05-24 VOZ958 BNE → SYD May 24, 05:25 UTCMay 24, 06:30 UTC1h 5m
2026-05-23 VOZ387 BNE → TSV May 23, 23:10 UTCMay 24, 03:20 UTC4h 10m
2026-05-23 VOZ951 SYD → BNE May 23, 05:25 UTCMay 23, 06:30 UTC1h 5m
2026-05-23 VOZ516 OOL → SYD May 23, 00:35 UTCMay 23, 01:35 UTC1h 0m
2026-05-22 VOZ509 SYD → OOL May 22, 22:35 UTCMay 22, 23:35 UTC1h 0m
2026-05-22 VOZ803 MEL → SYD May 22, 20:20 UTCMay 22, 21:25 UTC1h 5m
2026-05-22 VOZ886 SYD → MEL May 22, 10:05 UTCMay 22, 11:05 UTC1h 0m
2026-05-22 VOZ970 BNE → SYD May 22, 07:35 UTCMay 22, 08:55 UTC1h 20m
2026-05-22 VOZ331 MEL → BNE May 22, 04:35 UTCMay 22, 06:25 UTC1h 50m
2026-05-22 VOZ830 SYD → MEL May 22, 00:15 UTCMay 22, 01:20 UTC1h 5m
2026-05-21 VOZ815 MEL → SYD May 21, 21:50 UTCMay 21, 22:55 UTC1h 5m
2026-05-21 VOZ358 BNE → MEL May 21, 11:50 UTCMay 21, 13:40 UTC1h 50m
2026-05-21 VOZ981 SYD → BNE May 21, 09:10 UTCMay 21, 10:20 UTC1h 10m
2026-05-21 VOZ863 MEL → SYD May 21, 06:55 UTCMay 21, 08:05 UTC1h 10m
2026-05-21 VOZ324 BNE → MEL May 21, 01:25 UTCMay 21, 03:15 UTC1h 50m
2026-05-20 VOZ917 SYD → BNE May 20, 22:40 UTCMay 20, 23:40 UTC1h 0m
2026-05-20 VOZ534 OOL → SYD May 20, 06:35 UTCMay 20, 07:35 UTC1h 0m
2026-05-20 VOZ525 SYD → OOL May 20, 04:40 UTCMay 20, 05:35 UTC55m
2026-05-20 VOZ516 OOL → SYD May 20, 00:30 UTCMay 20, 01:30 UTC1h 0m
2026-05-19 VOZ509 SYD → OOL May 19, 22:35 UTCMay 19, 23:35 UTC1h 0m
2026-05-19 VOZ500 OOL → SYD May 19, 20:15 UTCMay 19, 21:25 UTC1h 10m
2026-05-19 VOZ755 MEL → OOL May 19, 09:20 UTCMay 19, 11:05 UTC1h 45m
2026-05-19 VOZ1373 LST → MEL May 19, 07:45 UTCMay 19, 08:20 UTC35m
2026-05-19 VOZ1368 MEL → LST May 19, 05:40 UTCMay 19, 06:10 UTC30m
2026-05-19 VOZ1323 HBA → MEL May 19, 03:55 UTCMay 19, 04:20 UTC25m
2026-05-19 VOZ1320 MEL → HBA May 19, 00:50 UTCMay 19, 01:20 UTC30m
2026-05-18 VOZ816 SYD → MEL May 18, 22:40 UTCMay 18, 23:45 UTC1h 5m
2026-05-18 VOZ520 OOL → SYD May 18, 02:40 UTCMay 18, 03:45 UTC1h 5m
2026-05-18 VOZ515 SYD → OOL May 18, 00:40 UTCMay 18, 01:40 UTC1h 0m
2026-05-17 VOZ813 MEL → SYD May 17, 21:45 UTCMay 17, 22:50 UTC1h 5m
2026-05-17 VOZ882 SYD → MEL May 17, 09:35 UTCMay 17, 10:55 UTC1h 20m
2026-05-17 VOZ534 OOL → SYD May 17, 06:55 UTCMay 17, 08:05 UTC1h 10m
2026-05-17 VOZ525 SYD → OOL May 17, 04:40 UTCMay 17, 05:45 UTC1h 5m
2026-05-17 VOZ833 MEL → SYD May 17, 00:35 UTCMay 17, 01:40 UTC1h 5m
2026-05-15 VOZ816 SYD → MEL May 15, 22:20 UTCMay 15, 23:25 UTC1h 5m
2026-05-15 VOZ996 BNE → SYD May 15, 11:20 UTCMay 15, 12:25 UTC1h 5m
2026-05-15 VOZ1693 CBR → OOL May 15, 02:55 UTCMay 15, 10:00 UTC7h 5m

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

Mode-S 7C56B7 frequently asked

What is Mode-S code 7C56B7?
7C56B7 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-REX.
Where is Mode-S 7C56B7 registered?
Mode-S code 7C56B7 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C56B7 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C56B7, octal 37053267, decimal 8,148,663.
What flights does 7C56B7 operate?
Mode-S 7C56B7 has broadcast 20 distinct callsigns, including VOZ744, VOZ557, VOZ516, VOZ509, VOZ917.