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
- Flights observed
- 118
- Distinct callsigns
- 20
- Country
- DE
- Last broadcast
- 1h ago
Current position
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 | Lufthansa Cargo | 11 | 2026-05-26 |
| GEC8427 | - | 10 | 2026-05-24 |
| GEC8400 | Lufthansa Cargo | 10 | 2026-05-26 |
| GEC8264 | Lufthansa Cargo | 9 | 2026-05-28 |
| GEC8431 | Lufthansa Cargo | 7 | 2026-05-17 |
| GEC8426 | - | 7 | 2026-05-23 |
| GEC8387 | Lufthansa Cargo | 6 | 2026-05-20 |
| GEC8386 | Lufthansa Cargo | 5 | 2026-05-19 |
| GEC8385 | Lufthansa Cargo | 4 | 2026-04-28 |
| GEC8225 | Lufthansa Cargo | 4 | 2026-05-22 |
| GEC8461 | Lufthansa Cargo | 3 | 2026-04-22 |
| GEC8430 | Lufthansa Cargo | 3 | 2026-05-17 |
| GEC8411 | Lufthansa Cargo | 3 | 2026-05-06 |
| GEC8265 | Lufthansa Cargo | 3 | 2026-05-28 |
| GEC8224 | Lufthansa Cargo | 3 | 2026-05-21 |
| GEC8413 | Lufthansa Cargo | 2 | 2026-05-25 |
| GEC8410 | Lufthansa Cargo | 2 | 2026-05-29 |
| GEC8403 | Lufthansa Cargo | 2 | 2026-04-22 |
| GEC8402 | Lufthansa Cargo | 2 | 2026-04-22 |
| GEC8384 | Lufthansa Cargo | 2 | 2026-04-27 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | GEC8410 | FRA → CTU | May 29, 08:55 UTC | May 30, 04:30 UTC | 19h 35m |
| 2026-05-28 | GEC8265 | EZE → FRA | May 28, 17:15 UTC | May 29, 06:05 UTC | 12h 50m |
| 2026-05-28 | GEC8264 | FRA → FRA | May 28, 14:25 UTC | May 28, 15:00 UTC | 35m |
| 2026-05-28 | GEC8264 | FRA → FRA | May 28, 10:30 UTC | May 28, 12:35 UTC | 2h 5m |
| 2026-05-27 | GEC8264 | FRA → FRA | May 27, 20:35 UTC | May 28, 08:00 UTC | 11h 25m |
| 2026-05-26 | GEC8401 | PVG → FRA | May 26, 19:20 UTC | May 27, 13:55 UTC | 18h 36m |
| 2026-05-26 | GEC8401 | PVG → FRA | May 26, 12:50 UTC | May 27, 12:45 UTC | 23h 55m |
| 2026-05-26 | GEC8400 | FRA → PVG | May 26, 10:50 UTC | May 27, 10:45 UTC | 23h 55m |
| 2026-05-26 | GEC8400 | FRA → PVG | May 26, 09:59 UTC | May 27, 06:25 UTC | 20h 25m |
| 2026-05-25 | GEC8413 | ICN → FRA | May 25, 11:05 UTC | May 26, 06:34 UTC | 19h 30m |
| 2026-05-25 | GEC8413 | ICN → FRA | May 25, 08:50 UTC | May 26, 06:34 UTC | 21h 44m |
| 2026-05-25 | GEC8412 | FRA → FRA | May 25, 08:05 UTC | May 26, 06:34 UTC | 22h 30m |
| 2026-05-24 | GEC8291 | CAI → FRA | May 24, 19:00 UTC | May 25, 05:20 UTC | 10h 20m |
| 2026-05-24 | GEC8427 | - | May 24, 10:20 UTC | May 24, 12:50 UTC | 2h 30m |
| 2026-05-24 | GEC8427 | - | May 24, 08:20 UTC | May 24, 08:35 UTC | 15m |
| 2026-05-24 | GEC8427 | - | May 24, 03:20 UTC | May 24, 07:35 UTC | 4h 15m |
| 2026-05-23 | GEC8427 | - | May 23, 09:40 UTC | May 24, 07:35 UTC | 21h 56m |
| 2026-05-23 | GEC8426 | - | May 23, 06:50 UTC | May 24, 06:45 UTC | 23h 55m |
| 2026-05-23 | GEC8426 | - | May 23, 06:40 UTC | May 24, 03:20 UTC | 20h 41m |
| 2026-05-23 | GEC8347 | IST → FRA | May 23, 00:35 UTC | May 23, 03:10 UTC | 2h 35m |
| 2026-05-22 | GEC8346 | FRA → IST | May 22, 19:15 UTC | May 22, 21:30 UTC | 2h 15m |
| 2026-05-22 | GEC8225 | GDL → FRA | May 22, 01:05 UTC | May 22, 14:10 UTC | 13h 5m |
| 2026-05-21 | GEC8224 | FRA → MEX | May 21, 10:35 UTC | May 21, 22:25 UTC | 11h 50m |
| 2026-05-20 | GEC8387 | NRT → FRA | May 20, 17:25 UTC | May 21, 06:05 UTC | 12h 40m |
| 2026-05-20 | GEC8387 | NRT → FRA | May 20, 12:25 UTC | May 20, 14:25 UTC | 2h 0m |
| 2026-05-19 | GEC8386 | FRA → NRT | May 19, 20:20 UTC | May 20, 08:55 UTC | 12h 36m |
| 2026-05-19 | GEC8225 | GDL → FRA | May 19, 13:05 UTC | May 19, 14:55 UTC | 1h 50m |
| 2026-05-19 | GEC8225 | GDL → FRA | May 19, 00:55 UTC | May 19, 09:25 UTC | 8h 30m |
| 2026-05-18 | GEC8224 | FRA → MEX | May 18, 10:35 UTC | May 18, 22:00 UTC | 11h 24m |
| 2026-05-17 | GEC8431 | PEK → FRA | May 17, 19:50 UTC | May 18, 07:15 UTC | 11h 25m |
| 2026-05-17 | GEC8430 | FRA → PEK | May 17, 16:30 UTC | May 17, 16:50 UTC | 20m |
| 2026-05-17 | GEC8430 | FRA → PEK | May 17, 06:50 UTC | May 17, 08:55 UTC | 2h 5m |
| 2026-05-16 | GEC8223 | DFW → FRA | May 16, 05:51 UTC | May 16, 15:40 UTC | 9h 50m |
| 2026-05-16 | GEC8223 | DFW → FRA | May 16, 03:35 UTC | May 16, 04:20 UTC | 45m |
| 2026-05-15 | GEC8222 | FRA → MEX | May 15, 12:15 UTC | May 15, 23:25 UTC | 11h 9m |
| 2026-05-14 | GEC8431 | PEK → FRA | May 14, 12:50 UTC | May 15, 09:10 UTC | 20h 20m |
| 2026-05-14 | GEC8431 | PEK → FRA | May 14, 10:50 UTC | May 15, 09:10 UTC | 22h 20m |
| 2026-05-14 | GEC8431 | PEK → FRA | May 14, 09:10 UTC | May 15, 08:45 UTC | 23h 35m |
| 2026-05-14 | GEC8293 | - | May 14, 01:55 UTC | May 14, 05:40 UTC | 3h 45m |
| 2026-05-13 | GEC8290 | FRA → FRA | May 13, 21:35 UTC | May 13, 22:15 UTC | 40m |
| 2026-05-13 | GEC8290 | FRA → FRA | May 13, 16:30 UTC | May 13, 19:45 UTC | 3h 15m |
| 2026-05-13 | GEC8431 | PEK → FRA | May 13, 04:50 UTC | May 13, 09:10 UTC | 4h 20m |
| 2026-05-12 | GEC8431 | PEK → FRA | May 12, 12:50 UTC | May 13, 09:10 UTC | 20h 20m |
| 2026-05-12 | GEC8431 | PEK → FRA | May 12, 10:50 UTC | May 13, 09:10 UTC | 22h 20m |
| 2026-05-12 | GEC8430 | FRA → PEK | May 12, 09:10 UTC | May 13, 08:45 UTC | 23h 35m |
| 2026-05-11 | GEC8265 | EZE → FRA | May 11, 16:45 UTC | May 12, 05:10 UTC | 12h 26m |
| 2026-05-11 | GEC8264 | FRA → FRA | May 11, 13:35 UTC | May 11, 14:05 UTC | 30m |
| 2026-05-11 | GEC8264 | FRA → FRA | May 11, 09:25 UTC | May 11, 11:45 UTC | 2h 20m |
| 2026-05-10 | GEC8264 | FRA → FRA | May 10, 18:55 UTC | May 11, 06:25 UTC | 11h 30m |
| 2026-05-10 | GEC8427 | - | May 10, 09:55 UTC | May 10, 12:19 UTC | 2h 25m |
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 .