Apparatus

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sensors Mode-S transponder

3C70C9

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C70C9
Octal
17070311
Decimal
3,961,033
Country
DE
Tail
D-ALFI
Type
B77L
No current signal · last broadcast 1h ago
Flights observed
174
Distinct callsigns
20
Country
DE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3C70C9.

Country allocation

The ICAO 24-bit address 3C70C9 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
GEC8443 - 18 2026-07-05
GEC8387 - 14 2026-07-10
GEC8430 - 11 2026-06-25
GEC8401 - 10 2026-06-19
GEC8400 - 9 2026-06-29
GEC8442 - 8 2026-07-04
GEC8431 Lufthansa Cargo 8 2026-06-25
GEC8463 Lufthansa Cargo 6 2026-05-10
GEC8386 - 6 2026-07-09
GEC8225 - 6 2026-07-09
GEC8161 - 6 2026-05-28
GEC8160 Lufthansa Cargo 6 2026-05-27
GEC8224 Lufthansa Cargo 5 2026-07-08
GEC8462 - 4 2026-07-11
GEC8403 - 4 2026-06-18
GEC8402 - 4 2026-06-17
GEC8290 - 4 2026-07-07
GEC8264 - 4 2026-07-12
GEC8223 - 4 2026-06-27
GEC8461 Lufthansa Cargo 3 2026-05-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 GEC8152 FRA → VCV Jul 17, 20:00 UTCJul 18, 01:30 UTC5h 30m
2026-07-17 GEC8152 FRA → VCV Jul 17, 18:34 UTCJul 17, 18:44 UTC10m
2026-07-17 GEC8466 - Jul 17, 08:30 UTCJul 17, 16:49 UTC8h 20m
2026-07-16 GEC8263 - Jul 16, 18:59 UTCJul 17, 06:05 UTC11h 5m
2026-07-12 GEC8264 - Jul 12, 19:10 UTCJul 13, 06:35 UTC11h 25m
2026-07-12 GEC8467 - Jul 12, 08:01 UTCJul 12, 12:35 UTC4h 35m
2026-07-12 GEC8467 - Jul 12, 00:15 UTCJul 12, 00:30 UTC15m
2026-07-11 GEC8462 - Jul 11, 20:15 UTCJul 11, 20:55 UTC40m
2026-07-11 GEC8462 - Jul 11, 09:45 UTCJul 11, 13:20 UTC3h 35m
2026-07-10 GEC8387 ICN → FRA Jul 10, 17:25 UTCJul 11, 06:15 UTC12h 51m
2026-07-10 GEC8387 - Jul 10, 12:45 UTCJul 10, 14:45 UTC2h 0m
2026-07-09 GEC8386 FRA → NRT Jul 9, 20:40 UTCJul 10, 08:40 UTC12h 0m
2026-07-09 GEC8225 - Jul 9, 01:20 UTCJul 9, 14:50 UTC13h 30m
2026-07-08 GEC8224 FRA → MEX Jul 8, 10:45 UTCJul 8, 22:05 UTC11h 20m
2026-07-08 GEC8291 - Jul 8, 01:35 UTCJul 8, 05:20 UTC3h 45m
2026-07-07 GEC8290 - Jul 7, 21:50 UTCJul 7, 22:30 UTC40m
2026-07-07 GEC8290 FRA → TLV Jul 7, 15:35 UTCJul 7, 19:05 UTC3h 30m
2026-07-05 GEC8443 - Jul 5, 13:35 UTCJul 5, 16:05 UTC2h 30m
2026-07-05 GEC8443 - Jul 5, 10:50 UTCJul 5, 11:25 UTC35m
2026-07-05 GEC8443 - Jul 5, 09:00 UTCJul 5, 10:20 UTC1h 20m
2026-07-04 GEC8442 - Jul 4, 09:05 UTCJul 4, 12:35 UTC3h 30m
2026-07-03 GEC8387 ICN → FRA Jul 3, 17:45 UTCJul 4, 06:10 UTC12h 25m
2026-07-03 GEC8387 - Jul 3, 12:55 UTCJul 3, 15:00 UTC2h 5m
2026-07-02 GEC8386 FRA → NRT Jul 2, 20:25 UTCJul 3, 08:45 UTC12h 20m
2026-07-02 GEC8225 - Jul 2, 05:10 UTCJul 2, 14:50 UTC9h 40m
2026-07-01 GEC8224 FRA → MEX Jul 1, 10:45 UTCJul 1, 22:35 UTC11h 50m
2026-06-30 GEC8225 - Jun 30, 14:10 UTCJul 1, 04:15 UTC14h 5m
2026-06-29 GEC8224 FRA → MEX Jun 29, 20:49 UTCJun 30, 08:15 UTC11h 26m
2026-06-29 GEC8400 FRA → FRA Jun 29, 10:34 UTCJun 29, 15:14 UTC4h 40m
2026-06-28 GEC8375 - Jun 28, 23:29 UTCJun 29, 07:15 UTC7h 45m
2026-06-28 GEC8375 - Jun 28, 10:19 UTCJun 29, 07:15 UTC20h 55m
2026-06-28 GEC8375 - Jun 28, 08:19 UTCJun 29, 07:15 UTC22h 55m
2026-06-28 GEC8374 - Jun 28, 06:55 UTCJun 29, 06:14 UTC23h 20m
2026-06-27 GEC8223 MTY → FRA Jun 27, 10:05 UTCJun 27, 19:49 UTC9h 45m
2026-06-27 GEC8223 - Jun 27, 06:50 UTCJun 27, 07:49 UTC1h 0m
2026-06-26 GEC8222 - Jun 26, 16:14 UTCJun 27, 03:30 UTC11h 15m
2026-06-25 GEC8431 PEK → FRA Jun 25, 21:50 UTCJun 26, 09:05 UTC11h 15m
2026-06-25 GEC8430 - Jun 25, 18:29 UTCJun 25, 18:50 UTC20m
2026-06-25 GEC8430 - Jun 25, 09:10 UTCJun 25, 12:50 UTC3h 40m
2026-06-25 GEC8291 - Jun 25, 01:50 UTCJun 25, 05:15 UTC3h 25m
2026-06-24 GEC8290 - Jun 24, 21:54 UTCJun 24, 22:49 UTC55m
2026-06-24 GEC8290 - Jun 24, 16:24 UTCJun 24, 19:49 UTC3h 25m
2026-06-24 GEC8443 - Jun 24, 11:05 UTCJun 24, 13:24 UTC2h 20m
2026-06-24 GEC8443 - Jun 24, 05:44 UTCJun 24, 07:54 UTC2h 10m
2026-06-23 GEC8443 - Jun 23, 21:34 UTCJun 23, 21:45 UTC10m
2026-06-23 GEC8442 - Jun 23, 07:35 UTCJun 23, 11:19 UTC3h 45m
2026-06-22 GEC8221 DFW → FRA Jun 22, 07:30 UTCJun 22, 17:34 UTC10h 5m
2026-06-21 GEC8220 FRA → MEX Jun 21, 16:54 UTCJun 22, 04:04 UTC11h 10m
2026-06-21 GEC8443 - Jun 21, 10:14 UTCJun 21, 12:40 UTC2h 25m
2026-06-21 GEC8443 - Jun 21, 08:25 UTCJun 21, 08:44 UTC20m

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

Mode-S 3C70C9 frequently asked

What is Mode-S code 3C70C9?
3C70C9 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALFI.
Where is Mode-S 3C70C9 registered?
Mode-S code 3C70C9 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70C9 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 3C70C9, octal 17070311, decimal 3,961,033.
What flights does 3C70C9 operate?
Mode-S 3C70C9 has broadcast 20 distinct callsigns, including GEC8443, GEC8387, GEC8430, GEC8401, GEC8400.