Apparatus

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sensors Mode-S transponder

3C4594

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AALT · BOEING 777-200LR

Hex
3C4594
Octal
17042624
Decimal
3,949,972
Country
DE
Tail
D-AALT
Type
B77L
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
278
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 3C4594.

Country allocation

The ICAO 24-bit address 3C4594 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
BOX396 - 18 2026-06-17
BOX571 AeroLogic 13 2026-07-24
BOX584 - 12 2026-07-15
BOX381 - 12 2026-04-17
BOX519 - 10 2026-07-14
BOX515 AeroLogic 8 2026-07-20
BOX738 - 7 2026-05-28
BOX720 - 7 2026-05-12
BOX585 - 7 2026-07-16
BOX570 AeroLogic 7 2026-07-24
BOX707 AeroLogic 6 2026-05-28
BOX534 AeroLogic 6 2026-06-01
BOX397 - 6 2026-07-16
BOX594 - 5 2026-07-14
BOX590 - 5 2026-07-19
BOX542 AeroLogic 5 2026-06-16
BOX733 - 4 2026-05-09
BOX722 - 4 2026-06-05
BOX563 - 4 2026-06-21
BOX562 AeroLogic 4 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 BOX618 FRA → MAA Jul 25, 23:45 UTCJul 26, 22:45 UTC23h 1m
2026-07-25 BOX618 FRA → MAA Jul 25, 21:05 UTCJul 26, 16:45 UTC19h 41m
2026-07-25 BOX618 FRA → MAA Jul 25, 20:35 UTCJul 26, 16:45 UTC20h 11m
2026-07-25 BOX912 LEJ → FRA Jul 25, 16:45 UTCJul 25, 17:25 UTC40m
2026-07-24 BOX571 LEJ → LEJ Jul 24, 13:35 UTCJul 25, 08:45 UTC19h 10m
2026-07-24 BOX571 LEJ → LEJ Jul 24, 07:15 UTCJul 25, 07:00 UTC23h 45m
2026-07-24 BOX570 LEJ → LEJ Jul 24, 05:05 UTCJul 25, 05:00 UTC23h 55m
2026-07-24 BOX570 LEJ → LEJ Jul 24, 04:35 UTCJul 24, 22:15 UTC17h 40m
2026-07-23 BOX509 - Jul 23, 14:10 UTCJul 23, 18:10 UTC4h 0m
2026-07-23 BOX509 - Jul 23, 06:25 UTCJul 23, 06:35 UTC10m
2026-07-22 BOX510 LEJ → HKG Jul 22, 12:20 UTCJul 22, 23:00 UTC10h 40m
2026-07-21 BOX571 LEJ → LEJ Jul 21, 14:00 UTCJul 22, 04:55 UTC14h 55m
2026-07-21 BOX571 LEJ → LEJ Jul 21, 07:05 UTCJul 22, 04:55 UTC21h 50m
2026-07-21 BOX570 LEJ → LEJ Jul 21, 05:05 UTCJul 22, 04:55 UTC23h 50m
2026-07-20 BOX515 HKG → LEJ Jul 20, 10:10 UTCJul 20, 14:10 UTC4h 0m
2026-07-20 BOX515 HKG → LEJ Jul 20, 02:00 UTCJul 20, 02:15 UTC15m
2026-07-19 BOX590 NRT → HKG Jul 19, 14:20 UTCJul 19, 18:05 UTC3h 45m
2026-07-18 BOX590 LEJ → NRT Jul 18, 21:35 UTCJul 19, 09:30 UTC11h 55m
2026-07-18 BOX531 - Jul 18, 01:34 UTCJul 18, 12:05 UTC10h 31m
2026-07-17 BOX531 - Jul 17, 23:00 UTCJul 17, 23:25 UTC25m
2026-07-17 BOX531 - Jul 17, 21:30 UTCJul 17, 21:55 UTC25m
2026-07-17 BOX530 - Jul 17, 07:40 UTCJul 17, 19:00 UTC11h 20m
2026-07-16 BOX397 - Jul 16, 21:25 UTCJul 17, 05:25 UTC8h 0m
2026-07-16 BOX585 - Jul 16, 15:19 UTCJul 16, 19:10 UTC3h 50m
2026-07-16 BOX585 - Jul 16, 02:00 UTCJul 16, 13:10 UTC11h 10m
2026-07-15 BOX584 - Jul 15, 11:10 UTCJul 15, 16:25 UTC5h 15m
2026-07-15 BOX584 - Jul 15, 08:50 UTCJul 15, 09:10 UTC20m
2026-07-15 BOX584 - Jul 15, 04:00 UTCJul 15, 07:25 UTC3h 25m
2026-07-14 BOX519 - Jul 14, 17:10 UTCJul 14, 21:20 UTC4h 10m
2026-07-14 BOX519 - Jul 14, 09:35 UTCJul 14, 09:50 UTC15m
2026-07-14 BOX594 NRT → HKG Jul 14, 02:30 UTCJul 14, 06:10 UTC3h 40m
2026-07-13 BOX594 LEJ → NRT Jul 13, 11:35 UTCJul 13, 23:40 UTC12h 5m
2026-07-12 BOX126 FRA → LEJ Jul 12, 20:10 UTCJul 12, 20:40 UTC30m
2026-07-12 BOX447 - Jul 12, 08:25 UTCJul 12, 16:35 UTC8h 10m
2026-07-11 BOX446 - Jul 11, 20:25 UTCJul 12, 04:50 UTC8h 25m
2026-07-11 BOX479 - Jul 11, 07:15 UTCJul 11, 17:25 UTC10h 10m
2026-07-10 BOX478 - Jul 10, 17:10 UTCJul 11, 04:25 UTC11h 16m
2026-07-10 BOX445 ORD → FRA Jul 10, 04:55 UTCJul 10, 12:30 UTC7h 35m
2026-07-09 BOX444 FRA → ORD Jul 9, 17:20 UTCJul 10, 01:55 UTC8h 35m
2026-07-09 BOX475 SEA → FRA Jul 9, 05:00 UTCJul 9, 14:25 UTC9h 25m
2026-07-09 BOX475 LAX → SEA Jul 9, 01:00 UTCJul 9, 03:10 UTC2h 10m
2026-07-08 BOX474 FRA → SEA Jul 8, 11:20 UTCJul 8, 22:15 UTC10h 55m
2026-07-07 BOX621 - Jul 7, 16:35 UTCJul 8, 03:20 UTC10h 45m
2026-07-06 BOX620 - Jul 6, 20:35 UTCJul 7, 12:55 UTC16h 20m
2026-07-04 BOX637 - Jul 4, 22:00 UTCJul 5, 04:15 UTC6h 15m
2026-07-04 BOX637 - Jul 4, 13:15 UTCJul 4, 19:25 UTC6h 10m
2026-07-04 BOX637 HKG → HYD Jul 4, 12:25 UTCJul 4, 12:40 UTC15m
2026-07-04 BOX630 - Jul 4, 08:15 UTCJul 4, 09:00 UTC45m
2026-07-03 BOX630 - Jul 3, 19:15 UTCJul 3, 22:45 UTC3h 30m
2026-07-03 BOX625 - Jul 3, 03:35 UTCJul 3, 15:50 UTC12h 15m

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 D-AALT page for operator, model, and routing details .

Mode-S 3C4594 frequently asked

What is Mode-S code 3C4594?
3C4594 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AALT.
Where is Mode-S 3C4594 registered?
Mode-S code 3C4594 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4594 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4594, octal 17042624, decimal 3,949,972.
What flights does 3C4594 operate?
Mode-S 3C4594 has broadcast 20 distinct callsigns, including BOX396, BOX571, BOX584, BOX381, BOX519.