sensors Mode-S transponder

3C70CB

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C70CB
Octal
17070313
Decimal
3,961,035
Country
DE
Tail
D-ALFK
Type
B77L
No current signal · last broadcast 1d ago
Flights observed
9
Distinct callsigns
3
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3C70CB.

Country allocation

The ICAO 24-bit address 3C70CB 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 3 distinct

Callsign Airline Flights Last seen
GEC8387 Lufthansa Cargo 4 2026-04-13
GEC8386 Lufthansa Cargo 4 2026-04-13
GEC8463 - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-13 GEC8387 NRT → FRA Apr 13, 16:10 UTCApr 13, 16:20 UTC10m
2026-04-13 GEC8387 NRT → FRA Apr 13, 12:20 UTCApr 13, 13:35 UTC1h 15m
2026-04-13 GEC8387 NRT → FRA Apr 13, 11:55 UTCApr 13, 13:35 UTC1h 40m
2026-04-13 GEC8387 NRT → FRA Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 GEC8386 FRA → NRT Apr 13, 08:30 UTCApr 13, 09:15 UTC45m
2026-04-13 GEC8386 FRA → NRT Apr 13, 07:55 UTCApr 13, 09:15 UTC1h 20m
2026-04-13 GEC8386 FRA → NRT Apr 13, 07:25 UTCApr 13, 07:55 UTC30m
2026-04-12 GEC8386 FRA → NRT Apr 12, 23:55 UTCApr 13, 00:25 UTC30m
2026-04-12 GEC8463 FRA → FRA Apr 12, 17:15 UTCApr 12, 17:20 UTC5m

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

Mode-S 3C70CB frequently asked

What is Mode-S code 3C70CB?
3C70CB is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALFK.
Where is Mode-S 3C70CB registered?
Mode-S code 3C70CB is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70CB broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C70CB, octal 17070313, decimal 3,961,035.
What flights does 3C70CB operate?
Mode-S 3C70CB has broadcast 3 distinct callsigns, including GEC8387, GEC8386, GEC8463.