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
Transponder active on ground
Flights observed
250
Distinct callsigns
20
Country
DE
Last broadcast
23m ago

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
BOX381 - 12 2026-04-17
BOX519 - 10 2026-07-14
BOX584 - 9 2026-05-19
BOX571 - 9 2026-06-25
BOX738 - 7 2026-05-28
BOX720 - 7 2026-05-12
BOX707 AeroLogic 6 2026-05-28
BOX534 AeroLogic 6 2026-06-01
BOX515 AeroLogic 6 2026-05-11
BOX594 - 5 2026-07-14
BOX585 AeroLogic 5 2026-05-20
BOX542 AeroLogic 5 2026-06-16
BOX397 AeroLogic 5 2026-05-20
BOX733 - 4 2026-05-09
BOX722 - 4 2026-06-05
BOX570 - 4 2026-06-25
BOX563 - 4 2026-06-21
BOX562 AeroLogic 4 2026-06-21
BOX467 - 4 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BOX519 - Jul 14, 17:10 UTCJul 14, 21:00 UTC3h 50m
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
2026-07-02 BOX624 FRA → BOM Jul 2, 22:35 UTCJul 2, 23:10 UTC35m
2026-07-02 BOX624 FRA → BOM Jul 2, 15:25 UTCJul 2, 19:00 UTC3h 35m
2026-07-02 BOX457 ATL → FRA Jul 2, 02:50 UTCJul 2, 10:45 UTC7h 55m
2026-07-01 BOX456 - Jul 1, 14:25 UTCJul 1, 23:40 UTC9h 15m
2026-07-01 BOX623 - Jul 1, 03:25 UTCJul 1, 11:35 UTC8h 10m
2026-06-30 BOX622 - Jun 30, 15:10 UTCJun 30, 23:00 UTC7h 50m
2026-06-30 BOX449 - Jun 30, 03:15 UTCJun 30, 10:50 UTC7h 35m
2026-06-29 BOX448 YYZ → ORD Jun 29, 22:49 UTCJun 30, 00:00 UTC1h 10m
2026-06-29 BOX448 YYZ → ORD Jun 29, 12:39 UTCJun 29, 20:24 UTC7h 45m
2026-06-29 BOX469 DFW → FRA Jun 29, 00:34 UTCJun 29, 09:40 UTC9h 5m
2026-06-28 BOX468 - Jun 28, 20:39 UTCJun 28, 21:20 UTC40m
2026-06-28 BOX468 - Jun 28, 07:54 UTCJun 28, 17:44 UTC9h 50m
2026-06-27 BOX467 - Jun 27, 17:49 UTCJun 27, 19:19 UTC1h 30m
2026-06-27 BOX467 - Jun 27, 07:04 UTCJun 27, 15:39 UTC8h 35m
2026-06-27 BOX466 - Jun 27, 03:55 UTCJun 27, 04:34 UTC40m
2026-06-26 BOX466 - Jun 26, 15:45 UTCJun 27, 01:49 UTC10h 5m
2026-06-26 BOX295 LEJ → FRA Jun 26, 11:40 UTCJun 26, 12:10 UTC30m
2026-06-25 BOX571 - Jun 25, 14:14 UTCJun 26, 08:50 UTC18h 35m
2026-06-25 BOX571 - Jun 25, 08:04 UTCJun 26, 06:04 UTC22h 0m
2026-06-25 BOX570 - Jun 25, 05:05 UTCJun 26, 04:59 UTC23h 55m
2026-06-24 BOX395 CVG → LEJ Jun 24, 11:39 UTCJun 24, 19:20 UTC7h 40m
2026-06-23 BOX394 - Jun 23, 21:10 UTCJun 24, 04:44 UTC7h 35m
2026-06-23 BOX389 EMA → CVG Jun 23, 11:19 UTCJun 23, 17:54 UTC6h 35m
2026-06-22 BOX390 - Jun 22, 17:55 UTCJun 23, 02:45 UTC8h 50m
2026-06-21 BOX563 - Jun 21, 17:24 UTCJun 22, 10:30 UTC17h 5m
2026-06-21 BOX563 - Jun 21, 11:30 UTCJun 22, 10:30 UTC23h 0m
2026-06-21 BOX562 LEJ → ICN Jun 21, 09:04 UTCJun 22, 09:00 UTC23h 55m
2026-06-21 BOX562 LEJ → ICN Jun 21, 08:30 UTCJun 22, 07:00 UTC22h 30m

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?
Mode-S 3C4594 is currently broadcasting from the ground.
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, BOX381, BOX519, BOX584, BOX571.