sensors Mode-S transponder
781F34
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32DP · AIRBUS A-321neo
- Hex
- 781F34
- Octal
- 36017464
- Decimal
- 7,872,308
- Country
- CN
- Tail
- B-32DP
- Type
- A21N
- Flights observed
- 95
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 25, 02:45 UTC
Current position
Country allocation
The ICAO 24-bit address 781F34 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China 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 |
|---|---|---|---|
| CXA8536 | - | 11 | 2026-07-05 |
| CXA8350 | Xiamen Airlines | 8 | 2026-06-16 |
| CXA8349 | - | 6 | 2026-06-16 |
| CXA864 | - | 5 | 2026-07-15 |
| CXA887 | Xiamen Airlines | 4 | 2026-07-18 |
| CXA863 | - | 4 | 2026-07-15 |
| CXA853 | Xiamen Airlines | 4 | 2026-07-21 |
| CXA844 | - | 4 | 2026-07-19 |
| CXA843 | - | 4 | 2026-07-19 |
| CXA8307 | Xiamen Airlines | 4 | 2026-07-21 |
| CXA888 | - | 3 | 2026-07-19 |
| CXA854 | Xiamen Airlines | 3 | 2026-07-21 |
| CXA8393 | Xiamen Airlines | 3 | 2026-06-01 |
| CXA8359 | Xiamen Airlines | 3 | 2026-07-22 |
| CXA8812 | Xiamen Airlines | 2 | 2026-07-24 |
| CXA8535 | - | 2 | 2026-06-22 |
| CXA8339 | Xiamen Airlines | 2 | 2026-05-25 |
| CXA8321 | - | 2 | 2026-07-09 |
| CXA8070 | Xiamen Airlines | 2 | 2026-07-23 |
| CXA8816 | Xiamen Airlines | 1 | 2026-04-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | CXA8812 | HRB → HGH | Jul 24, 07:05 UTC | Jul 25, 02:45 UTC | 19h 40m |
| 2026-07-24 | CXA8812 | HRB → HGH | Jul 24, 06:50 UTC | Jul 25, 02:45 UTC | 19h 55m |
| 2026-07-23 | CXA8070 | CGQ → HGH | Jul 23, 13:05 UTC | Jul 24, 07:35 UTC | 18h 30m |
| 2026-07-23 | CXA8070 | CGQ → HGH | Jul 23, 00:30 UTC | Jul 23, 13:50 UTC | 13h 20m |
| 2026-07-22 | CXA8359 | XMN → NNG | Jul 22, 12:35 UTC | Jul 23, 04:20 UTC | 15h 45m |
| 2026-07-21 | CXA8308 | SYX → XMN | Jul 21, 14:45 UTC | Jul 22, 12:50 UTC | 22h 5m |
| 2026-07-21 | CXA8307 | XMN → SYX | Jul 21, 10:50 UTC | Jul 21, 15:00 UTC | 4h 10m |
| 2026-07-21 | CXA854 | BKK → XMN | Jul 21, 05:45 UTC | Jul 21, 06:15 UTC | 30m |
| 2026-07-21 | CXA853 | XMN → BKK | Jul 21, 01:20 UTC | Jul 21, 04:05 UTC | 2h 45m |
| 2026-07-20 | CXA8361 | - | Jul 20, 10:25 UTC | Jul 20, 11:05 UTC | 40m |
| 2026-07-20 | CXA854 | BKK → XMN | Jul 20, 07:35 UTC | Jul 20, 07:50 UTC | 15m |
| 2026-07-20 | CXA854 | BKK → XMN | Jul 20, 05:30 UTC | Jul 20, 05:45 UTC | 15m |
| 2026-07-20 | CXA853 | XMN → BKK | Jul 20, 03:40 UTC | Jul 20, 03:50 UTC | 10m |
| 2026-07-19 | CXA844 | - | Jul 19, 19:15 UTC | Jul 20, 01:55 UTC | 6h 40m |
| 2026-07-19 | CXA843 | - | Jul 19, 14:55 UTC | Jul 19, 17:35 UTC | 2h 40m |
| 2026-07-19 | CXA888 | - | Jul 19, 03:40 UTC | Jul 19, 04:25 UTC | 45m |
| 2026-07-18 | CXA887 | XMN → TPE | Jul 18, 07:15 UTC | Jul 19, 01:50 UTC | 18h 35m |
| 2026-07-18 | CXA887 | XMN → TPE | Jul 18, 05:35 UTC | Jul 19, 01:50 UTC | 20h 15m |
| 2026-07-18 | CXA853 | XMN → BKK | Jul 18, 03:30 UTC | Jul 18, 03:45 UTC | 15m |
| 2026-07-18 | CXA853 | XMN → BKK | Jul 18, 01:15 UTC | Jul 18, 01:54 UTC | 40m |
| 2026-07-17 | CXA844 | - | Jul 17, 19:20 UTC | Jul 17, 21:44 UTC | 2h 25m |
| 2026-07-17 | CXA843 | - | Jul 17, 17:35 UTC | Jul 17, 17:55 UTC | 20m |
| 2026-07-17 | CXA843 | - | Jul 17, 15:29 UTC | Jul 17, 15:49 UTC | 20m |
| 2026-07-17 | CXA888 | - | Jul 17, 03:39 UTC | Jul 17, 04:20 UTC | 40m |
| 2026-07-17 | CXA887 | XMN → TPE | Jul 17, 00:50 UTC | Jul 17, 01:45 UTC | 55m |
| 2026-07-15 | CXA864 | - | Jul 15, 13:30 UTC | Jul 15, 15:50 UTC | 2h 20m |
| 2026-07-15 | CXA863 | - | Jul 15, 08:55 UTC | Jul 15, 11:25 UTC | 2h 30m |
| 2026-07-12 | CXA888 | - | Jul 12, 03:35 UTC | Jul 12, 04:05 UTC | 30m |
| 2026-07-12 | CXA887 | - | Jul 12, 01:35 UTC | Jul 12, 02:10 UTC | 35m |
| 2026-07-11 | CXA844 | - | Jul 11, 21:05 UTC | Jul 11, 21:25 UTC | 20m |
| 2026-07-11 | CXA844 | - | Jul 11, 19:15 UTC | Jul 11, 19:25 UTC | 10m |
| 2026-07-11 | CXA843 | - | Jul 11, 15:00 UTC | Jul 11, 15:20 UTC | 20m |
| 2026-07-10 | CXA864 | - | Jul 10, 15:20 UTC | Jul 11, 15:00 UTC | 23h 40m |
| 2026-07-10 | CXA864 | - | Jul 10, 13:20 UTC | Jul 10, 15:40 UTC | 2h 20m |
| 2026-07-10 | CXA863 | - | Jul 10, 09:25 UTC | Jul 10, 12:00 UTC | 2h 35m |
| 2026-07-09 | CXA8321 | - | Jul 9, 00:25 UTC | Jul 9, 00:40 UTC | 15m |
| 2026-07-08 | CXA8321 | - | Jul 8, 00:30 UTC | Jul 8, 00:45 UTC | 15m |
| 2026-07-05 | CXA8359 | - | Jul 5, 11:10 UTC | Jul 5, 11:35 UTC | 25m |
| 2026-07-05 | CXA8536 | - | Jul 5, 07:05 UTC | Jul 5, 07:40 UTC | 35m |
| 2026-07-03 | CXA8536 | - | Jul 3, 06:55 UTC | Jul 3, 07:25 UTC | 30m |
| 2026-07-02 | CXA8382 | - | Jul 2, 07:55 UTC | Jul 2, 08:05 UTC | 10m |
| 2026-07-01 | CXA8536 | - | Jul 1, 02:00 UTC | Jul 1, 07:25 UTC | 5h 25m |
| 2026-06-30 | CXA834 | - | Jun 30, 10:50 UTC | Jun 30, 13:20 UTC | 2h 30m |
| 2026-06-30 | CXA833 | - | Jun 30, 03:35 UTC | Jun 30, 09:15 UTC | 5h 40m |
| 2026-06-29 | CXA864 | - | Jun 29, 13:30 UTC | Jun 30, 01:45 UTC | 12h 16m |
| 2026-06-29 | CXA863 | - | Jun 29, 09:05 UTC | Jun 29, 11:29 UTC | 2h 25m |
| 2026-06-28 | CXA8536 | - | Jun 28, 08:29 UTC | Jun 28, 08:55 UTC | 25m |
| 2026-06-28 | CXA8536 | - | Jun 28, 01:44 UTC | Jun 28, 07:09 UTC | 5h 25m |
| 2026-06-27 | CXA8305 | - | Jun 27, 00:20 UTC | Jun 27, 00:29 UTC | 10m |
| 2026-06-24 | CXA8311 | - | Jun 24, 10:55 UTC | Jun 24, 11:50 UTC | 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 B-32DP page for operator, model, and routing details .