Apparatus

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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 3h ago
Flights observed
227
Distinct callsigns
20
Country
DE
Last broadcast
3h 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 20 distinct

Callsign Airline Flights Last seen
GEC8401 - 19 2026-07-12
GEC8400 - 17 2026-07-12
GEC8461 - 14 2026-07-14
GEC8264 - 13 2026-06-25
GEC8431 Lufthansa Cargo 10 2026-06-15
GEC8427 - 10 2026-05-24
GEC8411 - 10 2026-06-24
GEC8413 - 8 2026-07-12
GEC8426 - 7 2026-05-23
GEC8225 - 7 2026-07-10
GEC8387 Lufthansa Cargo 6 2026-05-20
GEC8385 Lufthansa Cargo 6 2026-07-04
GEC8224 Lufthansa Cargo 6 2026-07-09
GEC8463 Lufthansa Cargo 5 2026-06-01
GEC8430 Lufthansa Cargo 5 2026-06-14
GEC8386 Lufthansa Cargo 5 2026-05-19
GEC8265 - 5 2026-06-25
GEC8160 Lufthansa Cargo 5 2026-07-02
GEC8450 - 4 2026-06-17
GEC8443 - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GEC8461 - Jul 14, 10:45 UTCJul 14, 11:00 UTC15m
2026-07-13 GEC8460 FRA → HKG Jul 13, 19:35 UTCJul 14, 06:55 UTC11h 20m
2026-07-12 GEC8401 - Jul 12, 18:55 UTCJul 13, 13:20 UTC18h 25m
2026-07-12 GEC8400 - Jul 12, 10:50 UTCJul 13, 10:45 UTC23h 55m
2026-07-12 GEC8400 - Jul 12, 09:55 UTCJul 13, 02:10 UTC16h 15m
2026-07-12 GEC8413 - Jul 12, 01:20 UTCJul 12, 05:50 UTC4h 30m
2026-07-11 GEC8413 - Jul 11, 08:50 UTCJul 12, 05:50 UTC21h 0m
2026-07-11 GEC8413 FRA → FRA Jul 11, 07:25 UTCJul 12, 05:50 UTC22h 25m
2026-07-11 GEC8347 - Jul 11, 00:25 UTCJul 11, 03:05 UTC2h 40m
2026-07-10 GEC8346 - Jul 10, 19:05 UTCJul 10, 21:15 UTC2h 10m
2026-07-10 GEC8225 - Jul 10, 01:00 UTCJul 10, 14:50 UTC13h 50m
2026-07-09 GEC8224 FRA → MEX Jul 9, 10:30 UTCJul 9, 21:50 UTC11h 20m
2026-07-09 GEC8293 - Jul 9, 01:35 UTCJul 9, 05:20 UTC3h 45m
2026-07-08 GEC8293 - Jul 8, 21:10 UTCJul 8, 21:50 UTC40m
2026-07-08 GEC8292 - Jul 8, 15:15 UTCJul 8, 18:45 UTC3h 30m
2026-07-08 GEC8443 - Jul 8, 09:45 UTCJul 8, 12:20 UTC2h 35m
2026-07-08 GEC8443 - Jul 8, 07:45 UTCJul 8, 08:05 UTC20m
2026-07-08 GEC8443 - Jul 8, 05:55 UTCJul 8, 07:10 UTC1h 15m
2026-07-07 GEC8443 - Jul 7, 21:45 UTCJul 7, 21:55 UTC10m
2026-07-07 GEC8442 - Jul 7, 18:00 UTCJul 7, 18:10 UTC10m
2026-07-07 GEC8442 - Jul 7, 07:30 UTCJul 7, 11:05 UTC3h 35m
2026-07-06 GEC8221 - Jul 6, 07:35 UTCJul 6, 18:05 UTC10h 30m
2026-07-05 GEC8220 - Jul 5, 16:35 UTCJul 6, 04:10 UTC11h 35m
2026-07-04 GEC8385 NRT → FRA Jul 4, 17:25 UTCJul 5, 06:00 UTC12h 35m
2026-07-04 GEC8385 NRT → FRA Jul 4, 12:40 UTCJul 4, 14:40 UTC2h 0m
2026-07-03 GEC8384 - Jul 3, 20:50 UTCJul 4, 09:00 UTC12h 10m
2026-07-03 GEC8161 JFK → FRA Jul 3, 05:25 UTCJul 3, 12:20 UTC6h 55m
2026-07-02 GEC8160 FRA → JFK Jul 2, 17:50 UTCJul 3, 01:55 UTC8h 5m
2026-07-02 GEC8161 JFK → FRA Jul 2, 05:50 UTCJul 2, 12:30 UTC6h 40m
2026-07-01 GEC8160 FRA → JFK Jul 1, 18:35 UTCJul 2, 02:35 UTC8h 0m
2026-07-01 GEC8401 - Jul 1, 04:10 UTCJul 1, 15:20 UTC11h 10m
2026-06-30 GEC8401 - Jun 30, 13:40 UTCJul 1, 12:25 UTC22h 45m
2026-06-30 GEC8400 - Jun 30, 10:25 UTCJul 1, 04:30 UTC18h 5m
2026-06-29 GEC8161 JFK → FRA Jun 29, 07:05 UTCJun 29, 13:39 UTC6h 35m
2026-06-28 GEC8160 FRA → JFK Jun 28, 18:59 UTCJun 29, 02:59 UTC8h 0m
2026-06-28 GEC8160 FRA → JFK Jun 28, 16:29 UTCJun 28, 17:04 UTC35m
2026-06-28 GEC8161 JFK → FRA Jun 28, 04:20 UTCJun 28, 11:00 UTC6h 40m
2026-06-27 GEC8160 FRA → JFK Jun 27, 17:59 UTCJun 28, 01:44 UTC7h 45m
2026-06-27 GEC8401 - Jun 27, 03:40 UTCJun 27, 14:49 UTC11h 10m
2026-06-26 GEC8401 - Jun 26, 19:45 UTCJun 27, 14:49 UTC19h 5m
2026-06-26 GEC8401 - Jun 26, 12:55 UTCJun 27, 11:59 UTC23h 5m
2026-06-26 GEC8400 - Jun 26, 10:50 UTCJun 27, 10:45 UTC23h 55m
2026-06-26 GEC8400 - Jun 26, 10:20 UTCJun 27, 04:00 UTC17h 40m
2026-06-25 GEC8265 - Jun 25, 16:59 UTCJun 26, 05:50 UTC12h 50m
2026-06-25 - - Jun 25, 14:34 UTCJun 25, 14:55 UTC20m
2026-06-25 GEC8264 - Jun 25, 10:30 UTCJun 25, 12:30 UTC2h 0m
2026-06-24 GEC8264 - Jun 24, 20:49 UTCJun 25, 07:59 UTC11h 10m
2026-06-24 GEC8411 - Jun 24, 02:49 UTCJun 24, 06:59 UTC4h 10m
2026-06-23 GEC8411 - Jun 23, 11:45 UTCJun 24, 06:59 UTC19h 15m
2026-06-23 GEC8411 - Jun 23, 08:50 UTCJun 24, 06:59 UTC22h 10m

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 3h 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 20 distinct callsigns, including GEC8401, GEC8400, GEC8461, GEC8264, GEC8431.