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 Jul 26, 18:50 UTC
Flights observed
257
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 18:50 UTC

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
BOX530 AeroLogic 10 2026-07-23
BOX715 - 9 2026-07-04
BOX586 AeroLogic 9 2026-07-18
BOX570 - 9 2026-07-13
BOX531 AeroLogic 8 2026-07-24
BOX389 - 8 2026-07-17
BOX722 - 7 2026-07-03
BOX587 AeroLogic 7 2026-07-19
BOX528 AeroLogic 7 2026-07-26
BOX736 - 6 2026-07-01
BOX585 AeroLogic 6 2026-06-03
BOX584 - 6 2026-06-02
BOX709 - 5 2026-06-27
BOX589 AeroLogic 5 2026-04-15
BOX519 - 5 2026-06-25
BOX623 - 4 2026-07-08
BOX563 - 4 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BOX529 CAN → ANC Jul 26, 18:40 UTCJul 26, 18:50 UTC10m
2026-07-26 BOX528 LEJ → BKK Jul 26, 06:00 UTCJul 26, 06:10 UTC10m
2026-07-25 BOX528 LEJ → BKK Jul 25, 19:05 UTCJul 26, 04:20 UTC9h 15m
2026-07-24 BOX531 SIN → BLR Jul 24, 00:50 UTCJul 24, 11:45 UTC10h 55m
2026-07-23 BOX531 SIN → BLR Jul 23, 20:45 UTCJul 23, 22:40 UTC1h 55m
2026-07-23 BOX530 LEJ → SIN Jul 23, 05:40 UTCJul 23, 16:55 UTC11h 15m
2026-07-19 BOX399 CVG → LEJ Jul 19, 23:50 UTCJul 20, 07:50 UTC8h 0m
2026-07-19 BOX587 SZX → LEJ Jul 19, 17:45 UTCJul 19, 21:25 UTC3h 40m
2026-07-19 BOX587 SZX → LEJ Jul 19, 02:20 UTCJul 19, 13:05 UTC10h 45m
2026-07-18 BOX586 LEJ → BKK Jul 18, 18:35 UTCJul 18, 18:50 UTC15m
2026-07-18 BOX586 LEJ → BKK Jul 18, 16:40 UTCJul 18, 16:50 UTC10m
2026-07-18 BOX586 LEJ → BKK Jul 18, 04:15 UTCJul 18, 14:30 UTC10h 15m
2026-07-17 BOX193 EMA → LEJ Jul 17, 21:15 UTCJul 17, 22:40 UTC1h 25m
2026-07-17 BOX389 - Jul 17, 11:35 UTCJul 17, 18:44 UTC7h 10m
2026-07-16 BOX390 LEJ → CVG Jul 16, 18:29 UTCJul 17, 02:54 UTC8h 25m
2026-07-16 BOX531 - Jul 16, 00:55 UTCJul 16, 12:40 UTC11h 45m
2026-07-15 BOX531 - Jul 15, 21:05 UTCJul 15, 23:00 UTC1h 55m
2026-07-15 BOX530 - Jul 15, 05:50 UTCJul 15, 17:10 UTC11h 20m
2026-07-14 BOX571A - Jul 14, 15:35 UTCJul 15, 02:20 UTC10h 44m
2026-07-14 BOX571A - Jul 14, 03:40 UTCJul 15, 02:15 UTC22h 34m
2026-07-13 BOX570 - Jul 13, 20:20 UTCJul 14, 15:50 UTC19h 30m
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

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 Jul 26, 18:50 UTC.
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, BOX530, BOX715.