Apparatus

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sensors Mode-S transponder

3C70C3

ICAO 24-bit transponder address · allocated to Germany

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

Hex
3C70C3
Octal
17070303
Decimal
3,961,027
Country
DE
Tail
D-ALFC
Type
B77L
Broadcasting now · callsign GEC8387 · 36,000 ft
Flights observed
209
Distinct callsigns
20
Country
DE
Last broadcast
41m ago

Current position

3C70C3 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C70C3 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
GEC8461 - 20 2026-07-09
GEC8400 - 13 2026-07-06
GEC8431 Lufthansa Cargo 12 2026-06-27
GEC8430 - 12 2026-06-26
GEC8443 - 11 2026-05-13
GEC8401 - 10 2026-07-07
GEC8387 - 9 2026-07-13
GEC8466 - 8 2026-07-03
GEC8442 - 8 2026-05-12
GEC8413 - 8 2026-06-18
GEC8225 Lufthansa Cargo 7 2026-06-05
GEC8460 - 6 2026-07-02
GEC8264 Lufthansa Cargo 6 2026-06-08
GEC8224 Lufthansa Cargo 5 2026-06-04
GEC8262 - 4 2026-07-12
GEC8463 - 3 2026-06-29
GEC8428 - 3 2026-06-06
GEC8427 - 3 2026-05-01
GEC8412 - 3 2026-04-25
GEC8403 Lufthansa Cargo 3 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GEC8387 - Jul 13, 17:15 UTCJul 14, 02:45 UTC9h 30m
2026-07-13 GEC8387 - Jul 13, 16:05 UTCJul 13, 16:20 UTC15m
2026-07-13 GEC8387 NRT → ICN Jul 13, 11:55 UTCJul 13, 13:50 UTC1h 55m
2026-07-12 GEC8386 - Jul 12, 20:50 UTCJul 13, 09:10 UTC12h 20m
2026-07-12 GEC8263 - Jul 12, 06:30 UTCJul 12, 17:25 UTC10h 55m
2026-07-12 GEC8262 - Jul 12, 03:15 UTCJul 12, 03:35 UTC20m
2026-07-11 GEC8262 - Jul 11, 13:20 UTCJul 12, 01:05 UTC11h 45m
2026-07-10 GEC8263 - Jul 10, 22:15 UTCJul 11, 09:05 UTC10h 50m
2026-07-10 GEC8262 - Jul 10, 19:05 UTCJul 10, 19:25 UTC20m
2026-07-10 GEC8262 - Jul 10, 03:55 UTCJul 10, 15:25 UTC11h 30m
2026-07-09 GEC8461 - Jul 9, 00:30 UTCJul 9, 03:05 UTC2h 35m
2026-07-08 GEC8461 - Jul 8, 21:15 UTCJul 8, 21:35 UTC20m
2026-07-08 GEC8461 - Jul 8, 19:25 UTCJul 8, 20:35 UTC1h 10m
2026-07-08 GEC8461 - Jul 8, 11:00 UTCJul 8, 11:15 UTC15m
2026-07-08 GEC8450 - Jul 8, 05:20 UTCJul 8, 05:45 UTC25m
2026-07-07 GEC8450 - Jul 7, 18:50 UTCJul 7, 21:05 UTC2h 15m
2026-07-07 GEC8401 - Jul 7, 02:10 UTCJul 7, 13:40 UTC11h 30m
2026-07-06 GEC8401 - Jul 6, 12:50 UTCJul 7, 12:45 UTC23h 55m
2026-07-06 GEC8400 - Jul 6, 10:50 UTCJul 7, 10:25 UTC23h 35m
2026-07-06 GEC8400 - Jul 6, 10:00 UTCJul 7, 02:25 UTC16h 25m
2026-07-06 GEC8383 - Jul 6, 00:15 UTCJul 6, 04:35 UTC4h 20m
2026-07-05 GEC8383 - Jul 5, 16:05 UTCJul 5, 16:20 UTC15m
2026-07-05 GEC8383 - Jul 5, 11:50 UTCJul 5, 13:50 UTC2h 0m
2026-07-04 GEC8382 FRA → NRT Jul 4, 20:50 UTCJul 5, 09:15 UTC12h 25m
2026-07-04 GEC8461 - Jul 4, 15:05 UTCJul 4, 17:45 UTC2h 40m
2026-07-04 GEC8461 - Jul 4, 12:35 UTCJul 4, 12:55 UTC20m
2026-07-04 GEC8461 - Jul 4, 10:40 UTCJul 4, 11:55 UTC1h 15m
2026-07-04 GEC8461 - Jul 4, 02:50 UTCJul 4, 03:05 UTC15m
2026-07-03 GEC8466 - Jul 3, 22:00 UTCJul 3, 22:25 UTC25m
2026-07-03 GEC8466 - Jul 3, 18:35 UTCJul 3, 20:20 UTC1h 45m
2026-07-03 GEC8466 - Jul 3, 17:05 UTCJul 3, 17:15 UTC10m
2026-07-03 GEC8466 - Jul 3, 13:25 UTCJul 3, 13:50 UTC25m
2026-07-03 GEC8466 - Jul 3, 06:05 UTCJul 3, 09:40 UTC3h 35m
2026-07-03 GEC8461 - Jul 3, 00:40 UTCJul 3, 03:05 UTC2h 25m
2026-07-02 GEC8461 - Jul 2, 20:45 UTCJul 2, 21:00 UTC15m
2026-07-02 GEC8461 - Jul 2, 18:40 UTCJul 2, 20:00 UTC1h 20m
2026-07-02 GEC8461 - Jul 2, 10:35 UTCJul 2, 10:55 UTC20m
2026-07-02 GEC8460 ZGN → HKG Jul 2, 06:20 UTCJul 2, 06:45 UTC25m
2026-07-01 GEC8460 - Jul 1, 19:25 UTCJul 1, 21:45 UTC2h 20m
2026-06-29 GEC8463 - Jun 29, 13:59 UTCJun 29, 16:19 UTC2h 20m
2026-06-28 GEC8463 - Jun 28, 11:50 UTCJun 28, 13:04 UTC1h 15m
2026-06-28 GEC8463 - Jun 28, 03:35 UTCJun 28, 03:50 UTC15m
2026-06-27 GEC8462 - Jun 27, 23:10 UTCJun 27, 23:45 UTC35m
2026-06-27 GEC8462 - Jun 27, 12:50 UTCJun 27, 16:35 UTC3h 45m
2026-06-27 GEC8431 PEK → FRA Jun 27, 04:44 UTCJun 27, 09:00 UTC4h 15m
2026-06-26 GEC8431 PEK → FRA Jun 26, 21:35 UTCJun 26, 21:45 UTC10m
2026-06-26 GEC8430 - Jun 26, 18:09 UTCJun 26, 18:29 UTC20m
2026-06-26 GEC8430 - Jun 26, 08:45 UTCJun 26, 12:29 UTC3h 45m
2026-06-26 GEC8293 - Jun 26, 02:34 UTCJun 26, 06:04 UTC3h 30m
2026-06-25 GEC8292 FRA → CAI Jun 25, 21:15 UTCJun 25, 22:20 UTC1h 5m

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

Mode-S 3C70C3 frequently asked

What is Mode-S code 3C70C3?
3C70C3 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ALFC.
Where is Mode-S 3C70C3 registered?
Mode-S code 3C70C3 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C70C3 broadcasting right now?
Yes. Mode-S 3C70C3 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C70C3, octal 17070303, decimal 3,961,027.
What flights does 3C70C3 operate?
Mode-S 3C70C3 has broadcast 20 distinct callsigns, including GEC8461, GEC8400, GEC8431, GEC8430, GEC8443.