Apparatus

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sensors Mode-S transponder

3C4599

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C4599
Octal
17042631
Decimal
3,949,977
Country
DE
Tail
D-AALY
Type
B77L
No current signal · last broadcast 1h ago
Flights observed
236
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3C4599.

Country allocation

The ICAO 24-bit address 3C4599 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
BOX733 - 11 2026-07-02
BOX704 - 10 2026-05-04
BOX571 - 10 2026-06-23
BOX715 - 9 2026-07-04
BOX570 - 8 2026-07-13
BOX530 AeroLogic 8 2026-06-04
BOX722 - 7 2026-07-03
BOX389 AeroLogic 7 2026-06-22
BOX736 - 6 2026-07-01
BOX586 - 6 2026-06-20
BOX585 AeroLogic 6 2026-06-03
BOX584 - 6 2026-06-02
BOX709 - 5 2026-06-27
BOX589 AeroLogic 5 2026-04-15
BOX587 - 5 2026-06-21
BOX528 AeroLogic 5 2026-04-18
BOX519 - 5 2026-06-25
BOX623 - 4 2026-07-08
BOX563 - 4 2026-04-17
BOX531 AeroLogic 4 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BOX570 - Jul 13, 18:40 UTCJul 14, 15:50 UTC21h 10m
2026-07-13 BOX911 LEJ → FRA Jul 13, 15:35 UTCJul 13, 16:05 UTC30m
2026-07-13 BOX469 - Jul 13, 00:40 UTCJul 13, 09:55 UTC9h 15m
2026-07-12 BOX468 - Jul 12, 20:40 UTCJul 12, 21:40 UTC1h 0m
2026-07-12 BOX468 - Jul 12, 07:50 UTCJul 12, 17:35 UTC9h 45m
2026-07-11 BOX637 - Jul 11, 21:55 UTCJul 12, 04:25 UTC6h 30m
2026-07-11 BOX637 - Jul 11, 13:30 UTCJul 11, 19:15 UTC5h 45m
2026-07-11 BOX637 - Jul 11, 12:30 UTCJul 11, 12:35 UTC5m
2026-07-11 BOX630 ZGN → HKG Jul 11, 08:10 UTCJul 11, 08:45 UTC35m
2026-07-10 BOX630 - Jul 10, 19:05 UTCJul 10, 22:30 UTC3h 25m
2026-07-10 BOX625 - Jul 10, 03:05 UTCJul 10, 16:00 UTC12h 55m
2026-07-09 BOX624 FRA → BOM Jul 9, 15:25 UTCJul 9, 23:15 UTC7h 50m
2026-07-09 BOX457 - Jul 9, 03:00 UTCJul 9, 11:05 UTC8h 5m
2026-07-08 BOX456 FRA → ATL Jul 8, 14:40 UTCJul 8, 23:40 UTC9h 0m
2026-07-08 BOX623 - Jul 8, 03:10 UTCJul 8, 11:40 UTC8h 30m
2026-07-07 BOX622 FRA → BOM Jul 7, 15:15 UTCJul 7, 23:00 UTC7h 45m
2026-07-07 BOX449 ORD → FRA Jul 7, 03:20 UTCJul 7, 11:05 UTC7h 45m
2026-07-06 BOX448 - Jul 6, 23:05 UTCJul 7, 00:20 UTC1h 15m
2026-07-06 BOX448 FRA → YYZ Jul 6, 12:35 UTCJul 6, 20:20 UTC7h 45m
2026-07-05 BOX613 - Jul 5, 21:45 UTCJul 6, 04:05 UTC6h 20m
2026-07-05 BOX613 - Jul 5, 11:45 UTCJul 5, 19:55 UTC8h 10m
2026-07-04 BOX614 - Jul 4, 20:35 UTCJul 5, 09:25 UTC12h 50m
2026-07-04 BOX912 LEJ → FRA Jul 4, 16:50 UTCJul 4, 17:30 UTC40m
2026-07-04 BOX715 - Jul 4, 08:05 UTCJul 4, 14:15 UTC6h 10m
2026-07-03 BOX715 - Jul 3, 23:15 UTCJul 4, 05:10 UTC5h 55m
2026-07-03 BOX715 - Jul 3, 22:15 UTCJul 3, 22:30 UTC15m
2026-07-03 BOX722 - Jul 3, 18:25 UTCJul 3, 18:50 UTC25m
2026-07-03 BOX722 - Jul 3, 14:05 UTCJul 3, 17:45 UTC3h 40m
2026-07-03 BOX722 LEJ → DEL Jul 3, 04:00 UTCJul 3, 10:40 UTC6h 40m
2026-07-02 BOX733 - Jul 2, 07:55 UTCJul 2, 16:00 UTC8h 5m
2026-07-02 BOX733 - Jul 2, 07:10 UTCJul 2, 07:20 UTC10m
2026-07-01 BOX733 - Jul 1, 22:55 UTCJul 2, 02:05 UTC3h 10m
2026-07-01 BOX733 - Jul 1, 22:10 UTCJul 1, 22:25 UTC15m
2026-07-01 BOX736 - Jul 1, 16:10 UTCJul 1, 16:30 UTC20m
2026-07-01 BOX736 - Jul 1, 15:15 UTCJul 1, 15:35 UTC20m
2026-07-01 BOX736 - Jul 1, 05:50 UTCJul 1, 12:20 UTC6h 30m
2026-07-01 BOX736 - Jul 1, 02:40 UTCJul 1, 03:00 UTC20m
2026-06-30 BOX736 - Jun 30, 21:25 UTCJul 1, 01:30 UTC4h 5m
2026-06-30 BOX525 - Jun 30, 14:50 UTCJun 30, 18:20 UTC3h 30m
2026-06-30 BOX525 - Jun 30, 13:05 UTCJun 30, 13:15 UTC10m
2026-06-29 BOX525 - Jun 29, 23:14 UTCJun 30, 05:50 UTC6h 36m
2026-06-29 BOX525 - Jun 29, 22:19 UTCJun 29, 22:35 UTC15m
2026-06-29 BOX544 FRA → HKG Jun 29, 04:55 UTCJun 29, 18:14 UTC13h 20m
2026-06-28 BOX447 ORD → FRA Jun 28, 08:05 UTCJun 28, 15:34 UTC7h 30m
2026-06-27 BOX446 FRA → ORD Jun 27, 20:39 UTCJun 28, 04:55 UTC8h 15m
2026-06-27 BOX912 LEJ → FRA Jun 27, 17:20 UTCJun 27, 17:59 UTC40m
2026-06-27 BOX709 - Jun 27, 11:14 UTCJun 27, 14:54 UTC3h 40m
2026-06-27 BOX709 - Jun 27, 09:34 UTCJun 27, 09:44 UTC10m
2026-06-26 BOX709 - Jun 26, 23:34 UTCJun 27, 07:04 UTC7h 30m
2026-06-26 BOX520 NRT → CVG Jun 26, 11:40 UTCJun 26, 19:04 UTC7h 25m

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-AALY page for operator, model, and routing details .

Mode-S 3C4599 frequently asked

What is Mode-S code 3C4599?
3C4599 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AALY.
Where is Mode-S 3C4599 registered?
Mode-S code 3C4599 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4599 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4599, octal 17042631, decimal 3,949,977.
What flights does 3C4599 operate?
Mode-S 3C4599 has broadcast 20 distinct callsigns, including BOX733, BOX704, BOX571, BOX715, BOX570.