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 Jul 26, 21:45 UTC
Flights observed
365
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 21:45 UTC

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
VOZ819 Virgin Australia 4 2026-06-10
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
VOZ412 - 4 2026-07-05
VOZ247 - 4 2026-06-19
VOZ1380 Virgin Australia 4 2026-06-12
VOZ917 Virgin Australia 3 2026-05-29
VOZ875 - 3 2026-07-10
VOZ816 - 3 2026-06-20
VOZ743 Virgin Australia 3 2026-05-08
VOZ736 Virgin Australia 3 2026-06-13
VOZ733 Virgin Australia 3 2026-06-12
VOZ717 Virgin Australia 3 2026-07-23
VOZ700 Virgin Australia 3 2026-04-17
VOZ500 Virgin Australia 3 2026-05-19
VOZ466 - 3 2026-06-16
VOZ401 - 3 2026-07-04
VOZ352 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VOZ303 MEL → BNE Jul 26, 20:35 UTCJul 26, 21:45 UTC1h 10m
2026-07-26 VOZ238 ADL → MEL Jul 26, 09:40 UTCJul 26, 10:55 UTC1h 15m
2026-07-26 VOZ718 PER → ADL Jul 26, 05:30 UTCJul 26, 08:00 UTC2h 31m
2026-07-23 VOZ1892 PER → PER Jul 23, 07:20 UTCJul 23, 11:35 UTC4h 15m
2026-07-23 VOZ717 ADL → PER Jul 23, 02:55 UTCJul 23, 05:40 UTC2h 45m
2026-07-22 VOZ712 PER → ADL Jul 22, 23:20 UTCJul 23, 01:50 UTC2h 30m
2026-07-22 VOZ717 ADL → PER Jul 22, 03:05 UTCJul 22, 03:40 UTC35m
2026-07-21 VOZ712 PER → ADL Jul 21, 23:25 UTCJul 22, 02:00 UTC2h 35m
2026-07-21 VOZ1885 PER → ZNE Jul 21, 05:55 UTCJul 21, 09:50 UTC3h 55m
2026-07-20 VOZ1724 PER → PER Jul 20, 23:10 UTCJul 21, 04:15 UTC5h 4m
2026-07-20 VOZ593 HBA → PER Jul 20, 02:05 UTCJul 20, 11:25 UTC9h 20m
2026-07-19 VOZ675 MEL → PER Jul 19, 20:45 UTCJul 20, 00:45 UTC4h 0m
2026-07-18 VOZ1040 MCY → MEL Jul 18, 04:45 UTCJul 18, 06:50 UTC2h 5m
2026-07-18 VOZ1037 - Jul 18, 01:54 UTCJul 18, 03:45 UTC1h 51m
2026-07-17 VOZ824 - Jul 17, 23:20 UTCJul 18, 00:25 UTC1h 5m
2026-07-17 VOZ887 MEL → SYD Jul 17, 09:50 UTCJul 17, 10:55 UTC1h 5m
2026-07-17 VOZ866 - Jul 17, 07:14 UTCJul 17, 08:35 UTC1h 20m
2026-07-17 VOZ419 ADL → SYD Jul 17, 03:25 UTCJul 17, 05:04 UTC1h 40m
2026-07-17 VOZ414 SYD → ADL Jul 17, 00:30 UTCJul 17, 02:10 UTC1h 40m
2026-07-16 VOZ813 MEL → SYD Jul 16, 21:30 UTCJul 16, 22:49 UTC1h 20m
2026-07-16 VOZ268 - Jul 16, 04:35 UTCJul 16, 05:20 UTC45m
2026-07-16 VOZ267 - Jul 16, 02:50 UTCJul 16, 03:35 UTC45m
2026-07-15 VOZ892 SYD → MEL Jul 15, 10:50 UTCJul 15, 11:50 UTC1h 0m
2026-07-15 VOZ560 PER → SYD Jul 15, 05:30 UTCJul 15, 09:25 UTC3h 55m
2026-07-14 VOZ1724 PER → PER Jul 14, 22:55 UTCJul 15, 04:05 UTC5h 10m
2026-07-14 VOZ476 - Jul 14, 10:40 UTCJul 14, 15:35 UTC4h 55m
2026-07-14 VOZ785 BNE → BNE Jul 14, 04:25 UTCJul 14, 09:35 UTC5h 10m
2026-07-14 VOZ1217 - Jul 14, 01:35 UTCJul 14, 03:00 UTC1h 25m
2026-07-13 VOZ1210 - Jul 13, 23:10 UTCJul 14, 00:35 UTC1h 25m
2026-07-13 VOZ905 SYD → BNE Jul 13, 20:50 UTCJul 13, 22:05 UTC1h 15m
2026-07-13 VOZ970 BNE → SYD Jul 13, 07:10 UTCJul 13, 08:25 UTC1h 15m
2026-07-13 VOZ331 MEL → BNE Jul 13, 04:25 UTCJul 13, 06:10 UTC1h 45m
2026-07-12 VOZ682 PER → MEL Jul 12, 23:50 UTCJul 13, 02:55 UTC3h 5m
2026-07-12 VOZ1485 PER → PER Jul 12, 03:30 UTCJul 12, 09:10 UTC5h 40m
2026-07-10 VOZ569 - Jul 10, 11:10 UTCJul 10, 15:45 UTC4h 35m
2026-07-10 VOZ875 MEL → SYD Jul 10, 08:45 UTCJul 10, 10:05 UTC1h 20m
2026-07-10 VOZ224 ADL → MEL Jul 10, 05:50 UTCJul 10, 06:50 UTC1h 0m
2026-07-10 VOZ227 - Jul 10, 03:30 UTCJul 10, 04:25 UTC55m
2026-07-09 VOZ212 ADL → MEL Jul 9, 23:55 UTCJul 10, 00:55 UTC1h 0m
2026-07-09 VOZ211 MEL → ADL Jul 9, 21:50 UTCJul 9, 22:50 UTC1h 0m
2026-07-09 VOZ892 SYD → MEL Jul 9, 11:00 UTCJul 9, 12:05 UTC1h 5m
2026-07-09 VOZ978 BNE → SYD Jul 9, 08:15 UTCJul 9, 09:30 UTC1h 15m
2026-07-09 VOZ1118 - Jul 9, 06:00 UTCJul 9, 07:10 UTC1h 10m
2026-07-09 VOZ1117 - Jul 9, 03:30 UTCJul 9, 04:50 UTC1h 20m
2026-07-09 VOZ1391 - Jul 9, 00:05 UTCJul 9, 02:00 UTC1h 55m
2026-07-08 VOZ1384 - Jul 8, 20:25 UTCJul 8, 22:50 UTC2h 25m
2026-07-08 VOZ973 SYD → BNE Jul 8, 08:15 UTCJul 8, 09:25 UTC1h 10m
2026-07-08 VOZ853 MEL → SYD Jul 8, 05:45 UTCJul 8, 06:50 UTC1h 5m
2026-07-08 VOZ1323 MEL → MEL Jul 8, 01:05 UTCJul 8, 04:05 UTC3h 0m
2026-07-07 VOZ812 - Jul 7, 22:05 UTCJul 7, 23:10 UTC1h 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 Jul 26, 21:45 UTC.
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 VOZ819, VOZ744, VOZ557, VOZ516, VOZ509.