sensors Mode-S transponder
3C4B31
ICAO 24-bit transponder address · allocated to Germany
Currently assigned to D-ABYQ · BOEING 747-8
- Hex
- 3C4B31
- Octal
- 17045461
- Decimal
- 3,951,409
- Country
- DE
- Tail
- D-ABYQ
- Type
- B748
- Flights observed
- 92
- Distinct callsigns
- 18
- Country
- DE
- Last broadcast
- Jul 26, 21:20 UTC
Current position
Country allocation
The ICAO 24-bit address 3C4B31 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| DLH717 | - | 16 | 2026-07-22 |
| DLH716 | - | 15 | 2026-07-21 |
| DLH510 | Lufthansa | 15 | 2026-07-26 |
| DLH511 | Lufthansa | 12 | 2026-07-26 |
| DLH507 | Lufthansa | 4 | 2026-05-03 |
| DLH506 | Lufthansa | 4 | 2026-05-02 |
| DLH499 | Lufthansa | 4 | 2026-05-24 |
| DLH457 | Lufthansa | 4 | 2026-07-24 |
| DLH456 | Lufthansa | 4 | 2026-07-24 |
| DLH498 | Lufthansa | 3 | 2026-05-23 |
| DLH573 | - | 2 | 2026-07-15 |
| DLH572 | - | 2 | 2026-07-14 |
| DLH1591 | - | 2 | 2026-07-14 |
| DLH9911 | - | 1 | 2026-07-13 |
| DLH9910 | Lufthansa | 1 | 2026-05-28 |
| DLH717D | Lufthansa | 1 | 2026-07-23 |
| DLH431 | Lufthansa | 1 | 2026-05-22 |
| DLH430 | Lufthansa | 1 | 2026-05-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | DLH511 | EZE → FRA | Jul 26, 20:00 UTC | Jul 26, 21:20 UTC | 1h 20m |
| 2026-07-26 | DLH510 | FRA → EZE | Jul 26, 08:20 UTC | Jul 26, 10:55 UTC | 2h 35m |
| 2026-07-25 | DLH510 | FRA → EZE | Jul 25, 20:10 UTC | Jul 26, 06:50 UTC | 10h 41m |
| 2026-07-24 | DLH457 | LAX → FRA | Jul 24, 23:00 UTC | Jul 25, 08:40 UTC | 9h 40m |
| 2026-07-24 | DLH456 | FRA → LAX | Jul 24, 09:25 UTC | Jul 24, 20:25 UTC | 11h 0m |
| 2026-07-23 | DLH717D | HND → FRA | Jul 23, 04:30 UTC | Jul 23, 17:40 UTC | 13h 10m |
| 2026-07-22 | DLH717 | - | Jul 22, 04:05 UTC | Jul 22, 04:40 UTC | 35m |
| 2026-07-21 | DLH716 | FRA → HND | Jul 21, 12:30 UTC | Jul 22, 00:35 UTC | 12h 5m |
| 2026-07-20 | DLH457 | LAX → FRA | Jul 20, 22:50 UTC | Jul 21, 08:45 UTC | 9h 54m |
| 2026-07-20 | DLH456 | - | Jul 20, 09:40 UTC | Jul 20, 20:40 UTC | 11h 0m |
| 2026-07-19 | DLH717 | HND → FRA | Jul 19, 03:50 UTC | Jul 19, 17:10 UTC | 13h 20m |
| 2026-07-18 | DLH716 | - | Jul 18, 13:30 UTC | Jul 19, 01:05 UTC | 11h 35m |
| 2026-07-17 | DLH511 | - | Jul 17, 19:45 UTC | Jul 18, 08:20 UTC | 12h 36m |
| 2026-07-16 | DLH510 | FRA → EZE | Jul 16, 20:25 UTC | Jul 17, 10:00 UTC | 13h 35m |
| 2026-07-15 | DLH573 | - | Jul 15, 17:25 UTC | Jul 16, 03:25 UTC | 10h 0m |
| 2026-07-14 | DLH572 | FRA → JNB | Jul 14, 20:30 UTC | Jul 15, 06:25 UTC | 9h 54m |
| 2026-07-14 | DLH1591 | - | Jul 14, 03:50 UTC | Jul 14, 08:15 UTC | 4h 25m |
| 2026-07-13 | DLH1591 | - | Jul 13, 19:40 UTC | Jul 13, 20:00 UTC | 20m |
| 2026-07-13 | DLH9911 | - | Jul 13, 16:30 UTC | Jul 13, 17:15 UTC | 45m |
| 2026-05-28 | DLH9910 | FRA → DUS | May 28, 10:00 UTC | May 28, 19:25 UTC | 9h 25m |
| 2026-05-27 | DLH717 | HND → FRA | May 27, 03:34 UTC | May 27, 16:55 UTC | 13h 21m |
| 2026-05-26 | DLH716 | FRA → HND | May 26, 12:54 UTC | May 27, 00:49 UTC | 11h 55m |
| 2026-05-25 | DLH511 | EZE → FRA | May 25, 20:15 UTC | May 26, 08:50 UTC | 12h 35m |
| 2026-05-24 | DLH510 | FRA → EZE | May 24, 20:35 UTC | May 25, 10:05 UTC | 13h 30m |
| 2026-05-24 | DLH499 | MEX → FRA | May 24, 04:15 UTC | May 24, 13:45 UTC | 9h 30m |
| 2026-05-24 | DLH499 | MEX → FRA | May 24, 03:25 UTC | May 24, 03:40 UTC | 15m |
| 2026-05-23 | DLH498 | FRA → MEX | May 23, 13:10 UTC | May 24, 01:00 UTC | 11h 51m |
| 2026-05-22 | DLH431 | ORD → FRA | May 22, 21:55 UTC | May 23, 05:15 UTC | 7h 20m |
| 2026-05-22 | DLH430 | FRA → ORD | May 22, 09:40 UTC | May 22, 17:55 UTC | 8h 15m |
| 2026-05-20 | DLH457 | LAX → FRA | May 20, 22:40 UTC | May 21, 08:35 UTC | 9h 55m |
| 2026-05-20 | DLH456 | FRA → LAX | May 20, 09:25 UTC | May 20, 20:15 UTC | 10h 50m |
| 2026-05-18 | DLH573 | JNB → FRA | May 18, 17:25 UTC | May 19, 03:45 UTC | 10h 19m |
| 2026-05-17 | DLH572 | FRA → JNB | May 17, 20:30 UTC | May 18, 06:25 UTC | 9h 55m |
| 2026-05-17 | DLH717 | HND → FRA | May 17, 03:25 UTC | May 17, 17:15 UTC | 13h 50m |
| 2026-05-16 | DLH716 | FRA → HND | May 16, 12:25 UTC | May 17, 01:00 UTC | 12h 35m |
| 2026-05-15 | DLH511 | EZE → FRA | May 15, 19:50 UTC | May 16, 08:16 UTC | 12h 26m |
| 2026-05-15 | DLH510 | FRA → EZE | May 15, 09:00 UTC | May 15, 11:25 UTC | 2h 25m |
| 2026-05-14 | DLH510 | FRA → EZE | May 14, 20:10 UTC | May 15, 07:20 UTC | 11h 10m |
| 2026-05-13 | DLH511 | EZE → FRA | May 13, 19:50 UTC | May 14, 08:05 UTC | 12h 15m |
| 2026-05-12 | DLH510 | FRA → EZE | May 12, 20:05 UTC | May 13, 09:40 UTC | 13h 35m |
| 2026-05-11 | DLH511 | EZE → FRA | May 11, 19:50 UTC | May 12, 08:00 UTC | 12h 10m |
| 2026-05-10 | DLH510 | FRA → EZE | May 10, 21:35 UTC | May 11, 11:05 UTC | 13h 30m |
| 2026-05-09 | DLH499 | MEX → FRA | May 9, 02:45 UTC | May 9, 12:50 UTC | 10h 5m |
| 2026-05-08 | DLH498 | FRA → MEX | May 8, 12:10 UTC | May 8, 23:55 UTC | 11h 45m |
| 2026-05-07 | DLH511 | EZE → FRA | May 7, 19:55 UTC | May 8, 08:44 UTC | 12h 49m |
| 2026-05-06 | DLH510 | FRA → EZE | May 6, 20:25 UTC | May 7, 10:00 UTC | 13h 35m |
| 2026-05-05 | DLH511 | EZE → FRA | May 5, 19:55 UTC | May 6, 08:05 UTC | 12h 10m |
| 2026-05-04 | DLH510 | FRA → EZE | May 4, 20:20 UTC | May 5, 10:00 UTC | 13h 40m |
| 2026-05-03 | DLH507 | GRU → FRA | May 3, 21:54 UTC | May 4, 08:15 UTC | 10h 20m |
| 2026-05-02 | DLH506 | FRA → GRU | May 2, 20:40 UTC | May 3, 08:15 UTC | 11h 34m |
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-ABYQ page for operator, model, and routing details .