sensors Mode-S transponder

408210

ICAO 24-bit transponder address · allocated to United Kingdom

Currently assigned to G-SUNS · AIRBUS A-321neo

Hex
408210
Octal
20101020
Decimal
4,227,600
Country
GB
Tail
G-SUNS
Type
A21N
No current signal · last broadcast 16h ago
Flights observed
13
Distinct callsigns
6
Country
GB
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 408210.

Country allocation

The ICAO 24-bit address 408210 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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 6 distinct

Callsign Airline Flights Last seen
EXS74DF - 3 2026-04-13
EXS73KS Jet2.com 3 2026-04-13
EXS43M - 3 2026-04-13
EXS52GH - 2 2026-04-14
EXS83MA - 1 2026-04-12
EXS74ST - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 EXS52GH - Apr 14, 09:10 UTCApr 14, 10:25 UTC1h 15m
2026-04-14 EXS52GH - Apr 14, 07:35 UTCApr 14, 09:05 UTC1h 30m
2026-04-13 EXS74ST - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 EXS43M - Apr 13, 16:15 UTCApr 13, 18:10 UTC1h 55m
2026-04-13 EXS43M - Apr 13, 15:50 UTCApr 13, 18:10 UTC2h 20m
2026-04-13 EXS43M - Apr 13, 15:40 UTCApr 13, 16:15 UTC35m
2026-04-13 EXS74DF - Apr 13, 12:20 UTCApr 13, 13:45 UTC1h 25m
2026-04-13 EXS74DF - Apr 13, 11:55 UTCApr 13, 13:45 UTC1h 50m
2026-04-13 EXS74DF - Apr 13, 10:55 UTCApr 13, 12:15 UTC1h 20m
2026-04-13 EXS73KS BHX → AGP Apr 13, 08:20 UTCApr 13, 08:55 UTC35m
2026-04-13 EXS73KS BHX → AGP Apr 13, 07:55 UTCApr 13, 08:55 UTC1h 0m
2026-04-13 EXS73KS BHX → AGP Apr 13, 06:40 UTCApr 13, 08:15 UTC1h 35m
2026-04-12 EXS83MA - Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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 G-SUNS page for operator, model, and routing details .

Mode-S 408210 frequently asked

What is Mode-S code 408210?
408210 is an ICAO 24-bit transponder address. Allocated to United Kingdom. Assigned to G-SUNS.
Where is Mode-S 408210 registered?
Mode-S code 408210 is allocated to United Kingdom (GB). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 408210 broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 408210, octal 20101020, decimal 4,227,600.
What flights does 408210 operate?
Mode-S 408210 has broadcast 6 distinct callsigns, including EXS74DF, EXS73KS, EXS43M, EXS52GH, EXS83MA.