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sensors Mode-S transponder

888123

ICAO 24-bit transponder address · allocated to Vietnam

Currently assigned to VN-A890 · AIRBUS A-350-900

Hex
888123
Octal
42100443
Decimal
8,945,955
Country
VN
Tail
VN-A890
Type
A359
No current signal · last broadcast Jul 26, 22:20 UTC
Flights observed
235
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 22:20 UTC

Last known position

Most recent position reported by Mode-S 888123.

Country allocation

The ICAO 24-bit address 888123 falls within the block assigned to Vietnam (VN) by ICAO Annex 10, Volume III. Every aircraft registered in Vietnam 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
HVN19 - 28 2026-07-13
HVN10 - 28 2026-06-23
HVN11 - 23 2026-06-22
HVN18 - 14 2026-07-14
HVN773 Vietnam Airlines 13 2026-07-26
HVN73 Vietnam Airlines 12 2026-07-23
HVN72 Vietnam Airlines 10 2026-07-24
HVN781 - 7 2026-06-29
HVN978 Vietnam Airlines 6 2026-07-20
HVN32 Vietnam Airlines 6 2026-05-05
HVN772 Vietnam Airlines 5 2026-07-22
HVN245 - 5 2026-07-17
HVN780 - 4 2026-06-30
HVN415 - 4 2026-07-08
HVN414 - 4 2026-07-08
HVN979 - 3 2026-07-20
HVN779 - 3 2026-07-07
HVN778 - 3 2026-07-07
HVN384 - 3 2026-07-15
HVN33 Vietnam Airlines 3 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HVN773 SGN → SYD Jul 26, 10:10 UTCJul 26, 22:00 UTC11h 50m
2026-07-25 HVN265 HAN → SGN Jul 25, 13:50 UTCJul 26, 08:15 UTC18h 26m
2026-07-25 HVN251 HAN → SGN Jul 25, 07:20 UTCJul 25, 11:50 UTC4h 30m
2026-07-25 HVN244 SGN → HAN Jul 25, 05:30 UTCJul 25, 05:40 UTC10m
2026-07-25 HVN243 HAN → SGN Jul 25, 00:40 UTCJul 25, 01:00 UTC20m
2026-07-24 HVN72 MXP → HAN Jul 24, 11:15 UTCJul 24, 21:00 UTC9h 45m
2026-07-23 HVN73 HAN → MXP Jul 23, 18:15 UTCJul 24, 05:25 UTC11h 10m
2026-07-23 HVN216 - Jul 23, 11:20 UTCJul 23, 11:30 UTC10m
2026-07-23 HVN213 HAN → SGN Jul 23, 06:50 UTCJul 23, 07:05 UTC15m
2026-07-22 HVN265 HAN → SGN Jul 22, 14:00 UTCJul 23, 03:00 UTC13h 0m
2026-07-22 HVN254 - Jul 22, 12:15 UTCJul 22, 12:30 UTC15m
2026-07-22 HVN772 SYD → SGN Jul 22, 00:25 UTCJul 22, 04:30 UTC4h 5m
2026-07-21 HVN773 SGN → SYD Jul 21, 02:50 UTCJul 21, 21:55 UTC19h 5m
2026-07-21 HVN773 SGN → SYD Jul 21, 02:35 UTCJul 21, 21:55 UTC19h 20m
2026-07-20 HVN978 BOM → SGN Jul 20, 20:50 UTCJul 21, 15:45 UTC18h 54m
2026-07-20 HVN978 BOM → SGN Jul 20, 19:40 UTCJul 21, 15:45 UTC20h 4m
2026-07-20 HVN978 BOM → SGN Jul 20, 18:15 UTCJul 20, 18:25 UTC10m
2026-07-20 HVN979 - Jul 20, 15:25 UTCJul 20, 15:50 UTC25m
2026-07-20 HVN979 - Jul 20, 00:35 UTCJul 20, 14:10 UTC13h 35m
2026-07-19 HVN773 SGN → SYD Jul 19, 00:55 UTCJul 19, 22:25 UTC21h 30m
2026-07-18 HVN772 SYD → SGN Jul 18, 01:15 UTCJul 18, 22:25 UTC21h 11m
2026-07-17 HVN773 - Jul 17, 10:35 UTCJul 17, 22:45 UTC12h 10m
2026-07-17 - - Jul 17, 05:55 UTCJul 17, 06:05 UTC10m
2026-07-17 HVN245 - Jul 17, 01:25 UTCJul 17, 01:35 UTC10m
2026-07-16 HVN36 - Jul 16, 12:14 UTCJul 16, 22:05 UTC9h 50m
2026-07-15 HVN37 - Jul 15, 17:25 UTCJul 16, 03:45 UTC10h 20m
2026-07-15 HVN385 - Jul 15, 08:00 UTCJul 15, 11:30 UTC3h 30m
2026-07-15 HVN384 - Jul 15, 04:40 UTCJul 15, 06:30 UTC1h 50m
2026-07-15 HVN384 - Jul 15, 01:35 UTCJul 15, 01:45 UTC10m
2026-07-14 HVN18 - Jul 14, 12:50 UTCJul 14, 23:05 UTC10h 14m
2026-07-13 HVN19 - Jul 13, 17:45 UTCJul 14, 04:45 UTC11h 0m
2026-07-13 HVN786 - Jul 13, 13:40 UTCJul 13, 13:50 UTC10m
2026-07-13 HVN786 - Jul 13, 04:35 UTCJul 13, 11:30 UTC6h 55m
2026-07-12 HVN787 - Jul 12, 19:35 UTCJul 13, 02:20 UTC6h 45m
2026-07-12 HVN787 - Jul 12, 17:25 UTCJul 12, 17:35 UTC10m
2026-07-12 HVN273 - Jul 12, 10:05 UTCJul 12, 10:15 UTC10m
2026-07-12 HVN248 - Jul 12, 08:01 UTCJul 12, 08:25 UTC25m
2026-07-12 HVN247 - Jul 12, 03:30 UTCJul 12, 03:40 UTC10m
2026-07-11 HVN82 - Jul 11, 12:45 UTCJul 11, 22:40 UTC9h 55m
2026-07-11 HVN83 - Jul 11, 05:01 UTCJul 11, 08:25 UTC3h 25m
2026-07-10 HVN246 - Jul 10, 05:45 UTCJul 10, 06:00 UTC15m
2026-07-10 HVN245 - Jul 10, 01:25 UTCJul 10, 01:35 UTC10m
2026-07-09 HVN18 - Jul 9, 12:20 UTCJul 9, 22:35 UTC10h 15m
2026-07-08 HVN19 - Jul 8, 17:35 UTCJul 9, 04:45 UTC11h 10m
2026-07-08 HVN415 - Jul 8, 12:55 UTCJul 8, 13:05 UTC10m
2026-07-08 HVN415 - Jul 8, 09:20 UTCJul 8, 12:10 UTC2h 50m
2026-07-08 HVN414 - Jul 8, 03:45 UTCJul 8, 07:40 UTC3h 55m
2026-07-07 HVN778 - Jul 7, 14:35 UTCJul 8, 00:20 UTC9h 45m
2026-07-07 HVN779 - Jul 7, 05:15 UTCJul 7, 11:30 UTC6h 15m
2026-07-07 HVN779 - Jul 7, 03:05 UTCJul 7, 03:15 UTC10m

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 VN-A890 page for operator, model, and routing details .

Mode-S 888123 frequently asked

What is Mode-S code 888123?
888123 is an ICAO 24-bit transponder address. Allocated to Vietnam. Assigned to VN-A890.
Where is Mode-S 888123 registered?
Mode-S code 888123 is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 888123 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 888123, octal 42100443, decimal 8,945,955.
What flights does 888123 operate?
Mode-S 888123 has broadcast 20 distinct callsigns, including HVN19, HVN10, HVN11, HVN18, HVN773.