Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

88821A

ICAO 24-bit transponder address · allocated to Vietnam

Hex
88821A
Octal
42101032
Decimal
8,946,202
Country
VN
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
342
Distinct callsigns
20
Country
VN
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S 88821A.

Country allocation

The ICAO 24-bit address 88821A 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
VAG131 Vega 58 2026-07-26
VAG137 - 36 2026-07-10
VAG136 - 32 2026-07-10
VAG130 Vega 32 2026-07-26
VAG791 - 21 2026-07-25
VAG787 Vega 15 2026-07-26
VAG780 Vega 15 2026-07-22
VAG750 Vega 12 2026-07-26
VAG635 - 12 2026-07-09
VAG794 Vega 11 2026-07-26
VAG658 - 11 2026-07-10
VAG1275 - 11 2026-07-25
VAG751 Vega 9 2026-07-24
VAG639 - 9 2026-07-10
VAG1276 Vega 9 2026-07-25
VAG1213 Vega 9 2026-07-25
VAG1271 Vega 8 2026-07-25
VAG1270 Vega 8 2026-07-25
VAG638 - 4 2026-07-07
VAG1214 Vega 4 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VAG794 SGN → HAN Jul 26, 19:00 UTCJul 26, 19:15 UTC15m
2026-07-26 VAG787 HAN → SGN Jul 26, 14:45 UTCJul 26, 14:55 UTC10m
2026-07-26 VAG130 BKK → SGN Jul 26, 07:55 UTCJul 26, 12:50 UTC4h 55m
2026-07-26 VAG131 SGN → BKK Jul 26, 01:50 UTCJul 26, 06:15 UTC4h 25m
2026-07-26 VAG750 SGN → HAN Jul 26, 00:25 UTCJul 26, 00:40 UTC15m
2026-07-25 VAG791 - Jul 25, 17:50 UTCJul 25, 18:05 UTC15m
2026-07-25 VAG1276 CXR → HAN Jul 25, 16:15 UTCJul 25, 16:30 UTC15m
2026-07-25 VAG1275 - Jul 25, 12:05 UTCJul 25, 12:20 UTC15m
2026-07-25 VAG1213 HAN → BMV Jul 25, 07:25 UTCJul 25, 07:40 UTC15m
2026-07-25 VAG1270 CXR → HAN Jul 25, 05:50 UTCJul 25, 06:10 UTC20m
2026-07-25 VAG1271 HAN → CXR Jul 25, 01:50 UTCJul 25, 02:05 UTC15m
2026-07-24 VAG794 - Jul 24, 19:20 UTCJul 24, 19:30 UTC10m
2026-07-24 VAG787 HAN → SGN Jul 24, 14:20 UTCJul 24, 14:40 UTC20m
2026-07-24 VAG130 BKK → SGN Jul 24, 08:15 UTCJul 24, 08:45 UTC30m
2026-07-24 VAG131 SGN → BKK Jul 24, 06:10 UTCJul 24, 06:55 UTC45m
2026-07-24 VAG751 HAN → SGN Jul 24, 02:00 UTCJul 24, 02:10 UTC10m
2026-07-23 VAG791 - Jul 23, 16:00 UTCJul 23, 16:20 UTC20m
2026-07-23 VAG1275 - Jul 23, 10:55 UTCJul 23, 14:50 UTC3h 55m
2026-07-23 VAG1213 HAN → BMV Jul 23, 06:00 UTCJul 23, 09:35 UTC3h 35m
2026-07-23 VAG1270 CXR → HAN Jul 23, 04:40 UTCJul 23, 04:55 UTC15m
2026-07-23 VAG1271 HAN → CXR Jul 23, 00:55 UTCJul 23, 01:15 UTC20m
2026-07-22 VAG780 SGN → HAN Jul 22, 01:50 UTCJul 22, 12:20 UTC10h 30m
2026-07-22 VAG750 SGN → HAN Jul 22, 00:20 UTCJul 22, 00:35 UTC15m
2026-07-21 VAG791 - Jul 21, 16:00 UTCJul 21, 16:10 UTC10m
2026-07-21 VAG1276 - Jul 21, 14:25 UTCJul 21, 14:45 UTC20m
2026-07-21 VAG1275 - Jul 21, 10:50 UTCJul 21, 11:05 UTC15m
2026-07-21 VAG1214 BMV → HAN Jul 21, 06:15 UTCJul 21, 09:35 UTC3h 20m
2026-07-21 VAG1270 - Jul 21, 04:50 UTCJul 21, 05:05 UTC15m
2026-07-21 VAG1271 HAN → CXR Jul 21, 00:55 UTCJul 21, 01:10 UTC15m
2026-07-20 VAG1276 - Jul 20, 18:25 UTCJul 20, 18:35 UTC10m
2026-07-20 VAG1275 - Jul 20, 14:55 UTCJul 20, 15:10 UTC15m
2026-07-20 VAG780 - Jul 20, 12:40 UTCJul 20, 13:10 UTC30m
2026-07-20 VAG130 - Jul 20, 08:20 UTCJul 20, 08:30 UTC10m
2026-07-20 VAG131 SGN → BKK Jul 20, 02:55 UTCJul 20, 07:05 UTC4h 10m
2026-07-20 VAG750 SGN → HAN Jul 20, 01:25 UTCJul 20, 01:35 UTC10m
2026-07-19 VAG779 - Jul 19, 21:10 UTCJul 19, 21:25 UTC15m
2026-07-19 VAG778 - Jul 19, 19:35 UTCJul 19, 19:45 UTC10m
2026-07-19 VAG775 HAN → SGN Jul 19, 14:55 UTCJul 19, 15:10 UTC15m
2026-07-19 VAG130 - Jul 19, 08:10 UTCJul 19, 08:25 UTC15m
2026-07-19 VAG131 SGN → BKK Jul 19, 06:05 UTCJul 19, 06:40 UTC35m
2026-07-19 VAG751 HAN → SGN Jul 19, 01:55 UTCJul 19, 02:10 UTC15m
2026-07-18 VAG787 HAN → SGN Jul 18, 19:40 UTCJul 19, 00:30 UTC4h 50m
2026-07-18 VAG1275 - Jul 18, 13:40 UTCJul 18, 14:00 UTC20m
2026-07-18 VAG780 - Jul 18, 11:45 UTCJul 18, 11:55 UTC10m
2026-07-18 VAG130 - Jul 18, 07:35 UTCJul 18, 07:45 UTC10m
2026-07-18 VAG131 SGN → BKK Jul 18, 05:50 UTCJul 18, 06:20 UTC30m
2026-07-18 VAG751 HAN → SGN Jul 18, 01:54 UTCJul 18, 02:09 UTC15m
2026-07-18 VAG750 - Jul 18, 00:19 UTCJul 18, 00:29 UTC10m
2026-07-16 VAG787 HAN → SGN Jul 16, 18:34 UTCJul 16, 18:50 UTC15m
2026-07-16 VAG1276 - Jul 16, 17:00 UTCJul 16, 17:14 UTC15m

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.

Mode-S 88821A frequently asked

What is Mode-S code 88821A?
88821A is an ICAO 24-bit transponder address. Allocated to Vietnam.
Where is Mode-S 88821A registered?
Mode-S code 88821A is allocated to Vietnam (VN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88821A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88821A, octal 42101032, decimal 8,946,202.
What flights does 88821A operate?
Mode-S 88821A has broadcast 20 distinct callsigns, including VAG131, VAG137, VAG136, VAG130, VAG791.