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
- Flights observed
- 93
- Distinct callsigns
- 20
- Country
- DE
- Last broadcast
- 2h ago
Last known 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 |
|---|---|---|---|
| GEC8443 | - | 11 | 2026-05-13 |
| GEC8442 | - | 8 | 2026-05-12 |
| GEC8431 | Lufthansa Cargo | 6 | 2026-05-25 |
| GEC8413 | Lufthansa Cargo | 5 | 2026-04-26 |
| GEC8400 | Lufthansa Cargo | 5 | 2026-05-22 |
| GEC8225 | Lufthansa Cargo | 5 | 2026-05-26 |
| GEC8430 | Lufthansa Cargo | 4 | 2026-05-24 |
| GEC8401 | Lufthansa Cargo | 4 | 2026-05-23 |
| GEC8466 | - | 3 | 2026-05-29 |
| GEC8427 | - | 3 | 2026-05-01 |
| GEC8412 | - | 3 | 2026-04-25 |
| GEC8403 | Lufthansa Cargo | 3 | 2026-05-27 |
| GEC8291 | - | 3 | 2026-04-13 |
| GEC8264 | Lufthansa Cargo | 3 | 2026-05-18 |
| GEC8224 | Lufthansa Cargo | 3 | 2026-05-25 |
| GEC8221 | Lufthansa Cargo | 3 | 2026-05-11 |
| GEC8220 | Lufthansa Cargo | 3 | 2026-05-10 |
| GEC8460 | - | 2 | 2026-04-23 |
| GEC8426 | - | 2 | 2026-04-30 |
| GEC8385 | Lufthansa Cargo | 2 | 2026-05-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | GEC8466 | - | May 29, 18:35 UTC | May 29, 22:25 UTC | 3h 50m |
| 2026-05-29 | GEC8466 | - | May 29, 16:50 UTC | May 29, 17:00 UTC | 10m |
| 2026-05-29 | GEC8466 | - | May 29, 06:05 UTC | May 29, 13:55 UTC | 7h 50m |
| 2026-05-27 | GEC8403 | PVG → FRA | May 27, 14:50 UTC | May 28, 09:05 UTC | 18h 15m |
| 2026-05-27 | GEC8403 | PVG → FRA | May 27, 08:50 UTC | May 28, 08:45 UTC | 23h 55m |
| 2026-05-27 | GEC8403 | PVG → FRA | May 27, 06:49 UTC | May 28, 05:50 UTC | 23h 0m |
| 2026-05-27 | GEC8402 | FRA → PVG | May 27, 05:14 UTC | May 27, 21:30 UTC | 16h 15m |
| 2026-05-26 | GEC8225 | GDL → FRA | May 26, 05:00 UTC | May 26, 15:09 UTC | 10h 10m |
| 2026-05-25 | GEC8224 | FRA → MEX | May 25, 10:45 UTC | May 25, 22:05 UTC | 11h 19m |
| 2026-05-25 | GEC8431 | PEK → FRA | May 25, 03:10 UTC | May 25, 07:20 UTC | 4h 10m |
| 2026-05-24 | GEC8431 | PEK → FRA | May 24, 10:50 UTC | May 25, 07:20 UTC | 20h 30m |
| 2026-05-24 | GEC8431 | PEK → FRA | May 24, 08:50 UTC | May 25, 07:20 UTC | 22h 30m |
| 2026-05-24 | GEC8430 | FRA → PEK | May 24, 07:00 UTC | May 25, 06:45 UTC | 23h 45m |
| 2026-05-23 | GEC8401 | PVG → FRA | May 23, 09:10 UTC | May 23, 13:05 UTC | 3h 55m |
| 2026-05-22 | GEC8401 | PVG → FRA | May 22, 13:55 UTC | May 23, 12:45 UTC | 22h 49m |
| 2026-05-22 | GEC8400 | FRA → PVG | May 22, 10:50 UTC | May 23, 10:05 UTC | 23h 15m |
| 2026-05-22 | GEC8400 | FRA → PVG | May 22, 10:15 UTC | May 22, 14:10 UTC | 3h 55m |
| 2026-05-21 | GEC8365 | - | May 21, 10:50 UTC | May 22, 06:05 UTC | 19h 15m |
| 2026-05-21 | GEC8364 | - | May 21, 08:50 UTC | May 22, 06:05 UTC | 21h 15m |
| 2026-05-20 | GEC8431 | PEK → FRA | May 20, 17:15 UTC | May 21, 04:30 UTC | 11h 15m |
| 2026-05-19 | GEC8430 | FRA → PEK | May 19, 18:45 UTC | May 19, 19:05 UTC | 20m |
| 2026-05-19 | GEC8430 | FRA → PEK | May 19, 09:05 UTC | May 19, 11:15 UTC | 2h 10m |
| 2026-05-18 | GEC8265 | EZE → FRA | May 18, 17:40 UTC | May 19, 06:40 UTC | 12h 59m |
| 2026-05-18 | GEC8264 | FRA → FRA | May 18, 13:05 UTC | May 18, 13:35 UTC | 30m |
| 2026-05-18 | GEC8264 | FRA → FRA | May 18, 09:20 UTC | May 18, 11:00 UTC | 1h 40m |
| 2026-05-17 | GEC8264 | FRA → FRA | May 17, 19:10 UTC | May 18, 06:50 UTC | 11h 40m |
| 2026-05-17 | GEC8401 | PVG → FRA | May 17, 09:35 UTC | May 17, 13:40 UTC | 4h 5m |
| 2026-05-16 | GEC8400 | FRA → PVG | May 16, 10:50 UTC | May 17, 10:40 UTC | 23h 50m |
| 2026-05-16 | GEC8400 | FRA → PVG | May 16, 10:01 UTC | May 16, 12:16 UTC | 2h 15m |
| 2026-05-15 | GEC8361 | - | May 15, 12:50 UTC | May 16, 06:55 UTC | 18h 5m |
| 2026-05-15 | GEC8361 | - | May 15, 10:50 UTC | May 16, 06:55 UTC | 20h 5m |
| 2026-05-15 | GEC8360 | FRA → FRA | May 15, 09:15 UTC | May 16, 06:55 UTC | 21h 40m |
| 2026-05-14 | GEC8385 | NRT → FRA | May 14, 17:25 UTC | May 15, 05:55 UTC | 12h 30m |
| 2026-05-14 | GEC8385 | NRT → FRA | May 14, 12:35 UTC | May 14, 14:25 UTC | 1h 50m |
| 2026-05-13 | GEC8384 | FRA → NRT | May 13, 20:50 UTC | May 14, 10:00 UTC | 13h 10m |
| 2026-05-13 | GEC8443 | - | May 13, 06:05 UTC | May 13, 12:35 UTC | 6h 30m |
| 2026-05-12 | GEC8443 | - | May 12, 21:45 UTC | May 12, 21:55 UTC | 10m |
| 2026-05-12 | GEC8442 | - | May 12, 18:55 UTC | May 12, 19:10 UTC | 15m |
| 2026-05-12 | GEC8442 | - | May 12, 07:40 UTC | May 12, 11:20 UTC | 3h 40m |
| 2026-05-11 | GEC8221 | DFW → FRA | May 11, 07:55 UTC | May 11, 17:40 UTC | 9h 46m |
| 2026-05-10 | GEC8220 | FRA → MEX | May 10, 16:50 UTC | May 11, 04:25 UTC | 11h 35m |
| 2026-05-10 | GEC8443 | - | May 10, 10:30 UTC | May 10, 12:59 UTC | 2h 30m |
| 2026-05-10 | GEC8443 | - | May 10, 06:45 UTC | May 10, 07:55 UTC | 1h 10m |
| 2026-05-09 | GEC8443 | - | May 9, 22:15 UTC | May 9, 22:25 UTC | 10m |
| 2026-05-09 | GEC8442 | - | May 9, 19:19 UTC | May 9, 19:30 UTC | 10m |
| 2026-05-09 | GEC8442 | - | May 9, 08:10 UTC | May 9, 14:45 UTC | 6h 35m |
| 2026-05-08 | GEC8225 | GDL → FRA | May 8, 04:25 UTC | May 8, 14:05 UTC | 9h 40m |
| 2026-05-08 | GEC8225 | GDL → FRA | May 8, 01:09 UTC | May 8, 01:19 UTC | 10m |
| 2026-05-07 | GEC8224 | FRA → MEX | May 7, 10:30 UTC | May 7, 22:10 UTC | 11h 40m |
| 2026-05-03 | GEC8225 | GDL → FRA | May 3, 08:45 UTC | May 3, 18:40 UTC | 9h 55m |
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 .