sensors Mode-S transponder
3C4A07
ICAO 24-bit transponder address · allocated to Germany
- Hex
- 3C4A07
- Octal
- 17045007
- Decimal
- 3,951,111
- Country
- DE
- Flights observed
- 27
- Distinct callsigns
- 15
- Country
- DE
- Last broadcast
- 22h ago
Last known position
Country allocation
The ICAO 24-bit address 3C4A07 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| BOE507 | - | 6 | 2026-06-04 |
| DLH761 | - | 3 | 2026-07-12 |
| DLH760 | - | 3 | 2026-07-12 |
| DLH9899 | Lufthansa | 2 | 2026-06-09 |
| DLH797 | - | 2 | 2026-07-10 |
| DLH752 | - | 2 | 2026-07-13 |
| DLH9911 | - | 1 | 2026-06-26 |
| DLH7JF | - | 1 | 2026-07-01 |
| DLH796 | - | 1 | 2026-07-09 |
| DLH753 | - | 1 | 2026-07-08 |
| DLH501 | - | 1 | 2026-07-06 |
| DLH500 | - | 1 | 2026-07-05 |
| DLH479 | Lufthansa | 1 | 2026-07-01 |
| DLH478 | Lufthansa | 1 | 2026-06-30 |
| DLH107 | - | 1 | 2026-07-01 |
Recent flights last 27
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | DLH752 | - | Jul 13, 11:50 UTC | Jul 14, 06:45 UTC | 18h 55m |
| 2026-07-13 | DLH752 | FRA → FRA | Jul 13, 11:35 UTC | Jul 14, 06:45 UTC | 19h 10m |
| 2026-07-12 | DLH761 | - | Jul 12, 21:45 UTC | Jul 13, 05:31 UTC | 7h 45m |
| 2026-07-12 | DLH760 | FRA → DEL | Jul 12, 11:55 UTC | Jul 12, 18:45 UTC | 6h 50m |
| 2026-07-11 | DLH761 | - | Jul 11, 21:40 UTC | Jul 12, 05:30 UTC | 7h 50m |
| 2026-07-11 | DLH760 | FRA → DEL | Jul 11, 12:30 UTC | Jul 11, 19:20 UTC | 6h 50m |
| 2026-07-10 | DLH797 | - | Jul 10, 18:05 UTC | Jul 11, 04:20 UTC | 10h 16m |
| 2026-07-10 | DLH797 | - | Jul 10, 16:00 UTC | Jul 10, 16:20 UTC | 20m |
| 2026-07-09 | DLH796 | FRA → HKG | Jul 9, 20:00 UTC | Jul 10, 06:30 UTC | 10h 30m |
| 2026-07-08 | DLH753 | FRA → FRA | Jul 8, 11:20 UTC | Jul 9, 06:40 UTC | 19h 20m |
| 2026-07-07 | DLH761 | - | Jul 7, 21:50 UTC | Jul 8, 05:35 UTC | 7h 45m |
| 2026-07-07 | DLH760 | FRA → DEL | Jul 7, 11:55 UTC | Jul 7, 18:50 UTC | 6h 55m |
| 2026-07-06 | DLH501 | - | Jul 6, 19:30 UTC | Jul 7, 06:25 UTC | 10h 55m |
| 2026-07-05 | DLH500 | - | Jul 5, 20:40 UTC | Jul 6, 07:40 UTC | 11h 0m |
| 2026-07-01 | DLH107 | - | Jul 1, 15:35 UTC | Jul 1, 16:10 UTC | 35m |
| 2026-07-01 | DLH7JF | - | Jul 1, 13:15 UTC | Jul 1, 14:00 UTC | 45m |
| 2026-07-01 | DLH479 | YUL → FRA | Jul 1, 00:05 UTC | Jul 1, 06:30 UTC | 6h 25m |
| 2026-06-30 | DLH478 | FRA → YUL | Jun 30, 14:35 UTC | Jun 30, 21:30 UTC | 6h 55m |
| 2026-06-26 | DLH9911 | BER → FRA | Jun 26, 18:44 UTC | Jun 26, 19:30 UTC | 45m |
| 2026-06-09 | DLH9899 | SKG → FRA | Jun 9, 16:45 UTC | Jun 9, 17:05 UTC | 20m |
| 2026-06-09 | DLH9899 | SKG → FRA | Jun 9, 08:05 UTC | Jun 9, 15:50 UTC | 7h 45m |
| 2026-06-04 | BOE507 | - | Jun 4, 16:45 UTC | Jun 4, 18:20 UTC | 1h 35m |
| 2026-05-30 | BOE507 | - | May 30, 21:05 UTC | May 30, 21:45 UTC | 40m |
| 2026-05-30 | BOE507 | - | May 30, 16:55 UTC | May 30, 20:20 UTC | 3h 25m |
| 2026-05-29 | BOE507 | - | May 29, 17:00 UTC | May 29, 17:45 UTC | 45m |
| 2026-05-16 | BOE507 | - | May 16, 17:05 UTC | May 16, 19:45 UTC | 2h 40m |
| 2026-04-24 | BOE507 | - | Apr 24, 20:20 UTC | Apr 25, 00:10 UTC | 3h 50m |
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.