sensors Mode-S transponder

3C4591

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C4591
Octal
17042621
Decimal
3,949,969
Country
DE
Tail
D-AALQ
Type
B77L
No current signal · last broadcast 7h ago
Flights observed
145
Distinct callsigns
20
Country
DE
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 3C4591.

Country allocation

The ICAO 24-bit address 3C4591 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
BOX620 AeroLogic 10 2026-05-26
BOX621 AeroLogic 9 2026-05-26
BOX530 AeroLogic 8 2026-05-20
BOX720 - 7 2026-04-16
BOX586 AeroLogic 7 2026-05-18
BOX589 AeroLogic 6 2026-05-21
BOX395 - 6 2026-04-15
BOX735 - 5 2026-05-15
BOX712 - 5 2026-05-16
BOX587 AeroLogic 5 2026-05-19
BOX570 AeroLogic 5 2026-04-27
BOX531 AeroLogic 5 2026-05-20
BOX442 AeroLogic 5 2026-05-25
BOX733 - 4 2026-05-03
BOX584 - 4 2026-04-21
BOX571 AeroLogic 4 2026-04-27
BOX519 AeroLogic 4 2026-04-29
BOX513 AeroLogic 4 2026-04-17
BOX390 AeroLogic 4 2026-04-15
BOX619 AeroLogic 3 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 BOX617 HKG → LEJ May 29, 17:10 UTCMay 30, 03:30 UTC10h 20m
2026-05-28 BOX619 HAN → SGN May 28, 15:40 UTCMay 29, 07:55 UTC16h 15m
2026-05-28 BOX619 HAN → SGN May 28, 06:45 UTCMay 28, 23:10 UTC16h 25m
2026-05-28 BOX619 HAN → SGN May 28, 03:45 UTCMay 28, 23:10 UTC19h 25m
2026-05-27 BOX618 FRA → MAA May 27, 23:15 UTCMay 27, 23:25 UTC10m
2026-05-27 BOX618 FRA → MAA May 27, 15:05 UTCMay 27, 21:50 UTC6h 45m
2026-05-26 BOX621 HAN → SGN May 26, 06:20 UTCMay 27, 03:34 UTC21h 15m
2026-05-26 BOX621 HAN → SGN May 26, 02:55 UTCMay 27, 02:14 UTC23h 20m
2026-05-26 BOX620 FRA → SGN May 26, 00:19 UTCMay 27, 00:14 UTC23h 55m
2026-05-25 BOX620 FRA → SGN May 25, 22:19 UTCMay 26, 20:09 UTC21h 50m
2026-05-25 BOX620 FRA → SGN May 25, 20:34 UTCMay 26, 20:09 UTC23h 35m
2026-05-25 BOX443 DFW → FRA May 25, 08:40 UTCMay 25, 16:25 UTC7h 45m
2026-05-25 BOX442 ATL → DFW May 25, 04:15 UTCMay 25, 05:30 UTC1h 15m
2026-05-25 BOX442 ATL → DFW May 25, 01:55 UTCMay 25, 02:05 UTC10m
2026-05-24 BOX442 ATL → DFW May 24, 18:10 UTCMay 24, 20:10 UTC2h 0m
2026-05-24 BOX459 ATL → FRA May 24, 03:50 UTCMay 24, 12:00 UTC8h 10m
2026-05-23 BOX458 FRA → ATL May 23, 15:25 UTCMay 24, 00:40 UTC9h 16m
2026-05-23 BOX621 HAN → SGN May 23, 01:35 UTCMay 23, 12:25 UTC10h 49m
2026-05-22 BOX621 HAN → SGN May 22, 14:45 UTCMay 23, 12:25 UTC21h 39m
2026-05-22 BOX621 HAN → SGN May 22, 12:20 UTCMay 23, 12:15 UTC23h 54m
2026-05-22 BOX620 FRA → SGN May 22, 12:00 UTCMay 23, 10:15 UTC22h 14m
2026-05-22 BOX620 FRA → SGN May 22, 08:25 UTCMay 23, 04:45 UTC20h 19m
2026-05-22 BOX620 FRA → SGN May 22, 06:20 UTCMay 23, 04:45 UTC22h 24m
2026-05-22 BOX620 FRA → SGN May 22, 05:25 UTCMay 23, 04:15 UTC22h 49m
2026-05-22 BOX170 LEJ → FRA May 22, 02:30 UTCMay 22, 03:15 UTC45m
2026-05-21 BOX589 HKG → LEJ May 21, 01:10 UTCMay 21, 11:50 UTC10h 40m
2026-05-20 BOX531 SIN → BLR May 20, 21:15 UTCMay 20, 23:10 UTC1h 55m
2026-05-20 BOX530 LEJ → SIN May 20, 06:30 UTCMay 20, 18:10 UTC11h 40m
2026-05-19 BOX393 CVG → LEJ May 19, 19:35 UTCMay 20, 03:30 UTC7h 55m
2026-05-19 BOX587 SZX → LEJ May 19, 13:35 UTCMay 19, 17:05 UTC3h 30m
2026-05-19 BOX587 SZX → LEJ May 19, 00:55 UTCMay 19, 10:55 UTC10h 0m
2026-05-18 BOX587 SZX → LEJ May 18, 22:35 UTCMay 18, 22:45 UTC10m
2026-05-18 BOX586 LEJ → BKK May 18, 18:25 UTCMay 18, 18:40 UTC14m
2026-05-18 BOX586 LEJ → BKK May 18, 16:25 UTCMay 18, 16:55 UTC30m
2026-05-17 BOX586 LEJ → BKK May 17, 21:15 UTCMay 18, 11:40 UTC14h 25m
2026-05-17 BOX707 HKG → LEJ May 17, 00:15 UTCMay 17, 14:30 UTC14h 15m
2026-05-16 BOX707 HKG → LEJ May 16, 22:30 UTCMay 16, 22:45 UTC15m
2026-05-16 BOX712 LEJ → HKG May 16, 04:15 UTCMay 16, 19:20 UTC15h 6m
2026-05-15 BOX735 - May 15, 08:10 UTCMay 15, 15:50 UTC7h 39m
2026-05-14 BOX735 - May 14, 22:30 UTCMay 15, 02:45 UTC4h 15m
2026-05-14 BOX712 - May 14, 19:45 UTCMay 14, 20:10 UTC25m
2026-05-14 BOX712 - May 14, 05:05 UTCMay 14, 17:55 UTC12h 50m
2026-05-13 BOX555 - May 13, 07:15 UTCMay 13, 14:55 UTC7h 40m
2026-05-12 BOX555 - May 12, 22:20 UTCMay 13, 04:20 UTC6h 0m
2026-05-12 BOX554 LEJ → TPE May 12, 07:45 UTCMay 12, 20:05 UTC12h 20m
2026-05-12 BOX911 LEJ → FRA May 12, 03:45 UTCMay 12, 04:30 UTC45m
2026-05-11 BOX443 DFW → FRA May 11, 08:45 UTCMay 11, 16:10 UTC7h 25m
2026-05-11 BOX442 ATL → DFW May 11, 04:15 UTCMay 11, 05:30 UTC1h 15m
2026-05-10 BOX442 ATL → DFW May 10, 18:05 UTCMay 11, 02:00 UTC7h 55m
2026-05-10 BOX445 ORD → FRA May 10, 03:40 UTCMay 10, 11:20 UTC7h 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-AALQ page for operator, model, and routing details .

Mode-S 3C4591 frequently asked

What is Mode-S code 3C4591?
3C4591 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AALQ.
Where is Mode-S 3C4591 registered?
Mode-S code 3C4591 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4591 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4591, octal 17042621, decimal 3,949,969.
What flights does 3C4591 operate?
Mode-S 3C4591 has broadcast 20 distinct callsigns, including BOX620, BOX621, BOX530, BOX720, BOX586.