Apparatus

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sensors Mode-S transponder

3C458B

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C458B
Octal
17042613
Decimal
3,949,963
Country
DE
Tail
D-AALK
Type
B77L
Broadcasting now · callsign BOX464 · 36,000 ft
Flights observed
10
Distinct callsigns
4
Country
DE
Last broadcast
13h ago

Current position

3C458B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C458B 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 4 distinct

Callsign Airline Flights Last seen
BOX469 AeroLogic 5 2026-04-13
BOX459 - 2 2026-04-14
BOX458 - 2 2026-04-13
BOX468 - 1 2026-04-12

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 BOX459 - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 BOX459 - Apr 14, 07:45 UTCApr 14, 09:05 UTC1h 20m
2026-04-13 BOX458 - Apr 13, 20:00 UTCApr 13, 22:35 UTC2h 35m
2026-04-13 BOX458 - Apr 13, 13:15 UTCApr 13, 14:50 UTC1h 35m
2026-04-13 BOX469 IAH → FRA Apr 13, 08:20 UTCApr 13, 08:55 UTC35m
2026-04-13 BOX469 IAH → FRA Apr 13, 07:55 UTCApr 13, 08:55 UTC1h 0m
2026-04-13 BOX469 IAH → FRA Apr 13, 07:00 UTCApr 13, 08:15 UTC1h 15m
2026-04-13 BOX469 IAH → FRA Apr 13, 00:20 UTCApr 13, 02:30 UTC2h 10m
2026-04-13 BOX469 IAH → FRA Apr 13, 00:00 UTCApr 13, 02:30 UTC2h 30m
2026-04-12 BOX468 - Apr 12, 17:15 UTCApr 12, 18:10 UTC55m

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

Mode-S 3C458B frequently asked

What is Mode-S code 3C458B?
3C458B is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AALK.
Where is Mode-S 3C458B registered?
Mode-S code 3C458B is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C458B broadcasting right now?
Yes. Mode-S 3C458B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C458B, octal 17042613, decimal 3,949,963.
What flights does 3C458B operate?
Mode-S 3C458B has broadcast 4 distinct callsigns, including BOX469, BOX459, BOX458, BOX468.