sensors Mode-S transponder
78125E
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8900 · AIRBUS A-321
- Hex
- 78125E
- Octal
- 36011136
- Decimal
- 7,869,022
- Country
- CN
- Tail
- B-8900
- Type
- A321
- Flights observed
- 66
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 78125E 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 |
|---|---|---|---|
| CSN6796 | China Southern Airlines | 8 | 2026-06-28 |
| CSN6630 | - | 8 | 2026-07-11 |
| CSN6624 | - | 6 | 2026-07-06 |
| CSN6623 | China Southern Airlines | 4 | 2026-05-04 |
| CSN3836 | - | 4 | 2026-06-29 |
| CSN6782 | China Southern Airlines | 3 | 2026-05-05 |
| CSN6744 | China Southern Airlines | 3 | 2026-05-22 |
| CSN6740 | China Southern Airlines | 3 | 2026-06-23 |
| CSN6936 | China Southern Airlines | 2 | 2026-07-02 |
| CSN6781 | China Southern Airlines | 2 | 2026-04-18 |
| CSN6732 | - | 2 | 2026-06-24 |
| CSN6668 | China Southern Airlines | 2 | 2026-06-22 |
| CSN6360 | China Southern Airlines | 2 | 2026-05-30 |
| CSN8751 | China Southern Airlines | 1 | 2026-05-29 |
| CSN8409 | - | 1 | 2026-07-02 |
| CSN8276 | China Southern Airlines | 1 | 2026-06-19 |
| CSN675R | - | 1 | 2026-05-21 |
| CSN6757 | - | 1 | 2026-06-19 |
| CSN6753 | China Southern Airlines | 1 | 2026-06-06 |
| CSN6734 | China Southern Airlines | 1 | 2026-04-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-11 | CSN6630 | - | Jul 11, 11:40 UTC | Jul 12, 06:55 UTC | 19h 15m |
| 2026-07-11 | CSN6630 | - | Jul 11, 07:00 UTC | Jul 11, 12:30 UTC | 5h 30m |
| 2026-07-10 | CSN6630 | - | Jul 10, 11:40 UTC | Jul 11, 07:00 UTC | 19h 20m |
| 2026-07-10 | CSN6630 | - | Jul 10, 07:20 UTC | Jul 10, 12:35 UTC | 5h 15m |
| 2026-07-08 | CSN6667 | - | Jul 8, 08:45 UTC | Jul 8, 09:15 UTC | 30m |
| 2026-07-07 | CSN6717 | - | Jul 7, 13:35 UTC | Jul 7, 13:45 UTC | 10m |
| 2026-07-06 | CSN6624 | - | Jul 6, 14:00 UTC | Jul 7, 07:10 UTC | 17h 10m |
| 2026-07-06 | CSN6624 | - | Jul 6, 08:40 UTC | Jul 7, 07:10 UTC | 22h 30m |
| 2026-07-03 | CSN6189 | - | Jul 3, 06:50 UTC | Jul 3, 23:25 UTC | 16h 35m |
| 2026-07-02 | CSN8409 | - | Jul 2, 13:00 UTC | Jul 2, 13:15 UTC | 15m |
| 2026-07-02 | CSN6936 | XIY → SYX | Jul 2, 04:45 UTC | Jul 2, 10:25 UTC | 5h 40m |
| 2026-06-30 | CSN3978 | - | Jun 30, 03:20 UTC | Jun 30, 03:30 UTC | 10m |
| 2026-06-29 | CSN3977 | SYX → SZX | Jun 29, 23:49 UTC | Jun 30, 00:04 UTC | 15m |
| 2026-06-29 | CSN3836 | - | Jun 29, 04:50 UTC | Jun 29, 10:59 UTC | 6h 10m |
| 2026-06-28 | CSN6630 | - | Jun 28, 13:34 UTC | Jun 29, 10:59 UTC | 21h 25m |
| 2026-06-28 | CSN6796 | KWE → SYX | Jun 28, 00:15 UTC | Jun 28, 14:19 UTC | 14h 5m |
| 2026-06-27 | CSN6796 | KWE → SYX | Jun 27, 14:39 UTC | Jun 28, 04:20 UTC | 13h 40m |
| 2026-06-27 | CSN6796 | KWE → SYX | Jun 27, 08:55 UTC | Jun 28, 04:20 UTC | 19h 25m |
| 2026-06-27 | CSN6796 | KWE → SYX | Jun 27, 06:19 UTC | Jun 28, 04:20 UTC | 22h 0m |
| 2026-06-25 | CSN3836 | - | Jun 25, 04:35 UTC | Jun 25, 11:35 UTC | 7h 0m |
| 2026-06-24 | CSN6732 | - | Jun 24, 03:29 UTC | Jun 24, 03:44 UTC | 15m |
| 2026-06-23 | CSN6740 | CAN → SYX | Jun 23, 01:10 UTC | Jun 23, 15:24 UTC | 14h 15m |
| 2026-06-22 | CSN6668 | NKG → SYX | Jun 22, 12:59 UTC | Jun 23, 07:49 UTC | 18h 50m |
| 2026-06-22 | CSN6668 | NKG → SYX | Jun 22, 07:19 UTC | Jun 23, 01:10 UTC | 17h 50m |
| 2026-06-22 | CSN6796 | KWE → SYX | Jun 22, 03:50 UTC | Jun 23, 01:10 UTC | 21h 20m |
| 2026-06-22 | CSN6796 | KWE → SYX | Jun 22, 00:29 UTC | Jun 22, 13:14 UTC | 12h 45m |
| 2026-06-21 | CSN6630 | - | Jun 21, 12:35 UTC | Jun 22, 07:19 UTC | 18h 45m |
| 2026-06-21 | CSN6630 | - | Jun 21, 06:55 UTC | Jun 22, 04:15 UTC | 21h 20m |
| 2026-06-21 | CSN6796 | KWE → SYX | Jun 21, 03:44 UTC | Jun 22, 00:50 UTC | 21h 5m |
| 2026-06-21 | CSN6796 | KWE → SYX | Jun 21, 00:29 UTC | Jun 21, 13:00 UTC | 12h 30m |
| 2026-06-19 | CSN6936 | XIY → SYX | Jun 19, 16:14 UTC | Jun 20, 10:25 UTC | 18h 10m |
| 2026-06-19 | CSN6757 | - | Jun 19, 14:24 UTC | Jun 19, 14:44 UTC | 20m |
| 2026-06-19 | CSN8276 | WUH → SYX | Jun 19, 09:55 UTC | Jun 19, 10:14 UTC | 20m |
| 2026-06-17 | CSN6715 | SYX → PKX | Jun 17, 06:40 UTC | Jun 17, 14:35 UTC | 7h 55m |
| 2026-06-10 | CSN3836 | PVG → SYX | Jun 10, 05:25 UTC | Jun 10, 10:40 UTC | 5h 15m |
| 2026-06-06 | CSN6753 | SYX → PVG | Jun 6, 01:15 UTC | Jun 6, 07:35 UTC | 6h 20m |
| 2026-06-05 | CSN6740 | CAN → SYX | Jun 5, 09:55 UTC | Jun 6, 07:35 UTC | 21h 40m |
| 2026-06-05 | CSN6740 | CAN → SYX | Jun 5, 06:35 UTC | Jun 6, 02:25 UTC | 19h 50m |
| 2026-06-03 | CSN6190 | TFU → SYX | Jun 3, 00:15 UTC | Jun 3, 12:35 UTC | 12h 20m |
| 2026-06-02 | CSN6228 | CKG → SYX | Jun 2, 06:20 UTC | Jun 3, 04:50 UTC | 22h 30m |
| 2026-06-01 | CSN6630 | CGQ → HGH | Jun 1, 07:00 UTC | Jun 1, 12:35 UTC | 5h 35m |
| 2026-05-30 | CSN6360 | HRB → WUH | May 30, 15:20 UTC | May 30, 15:35 UTC | 15m |
| 2026-05-30 | CSN6360 | HRB → WUH | May 30, 10:25 UTC | May 30, 10:35 UTC | 10m |
| 2026-05-29 | CSN6359 | WUH → HRB | May 29, 13:25 UTC | May 30, 06:30 UTC | 17h 5m |
| 2026-05-29 | CSN8751 | SYX → TFU | May 29, 01:10 UTC | May 29, 01:20 UTC | 10m |
| 2026-05-24 | CSN6624 | NKG → SYX | May 24, 07:10 UTC | May 24, 07:20 UTC | 10m |
| 2026-05-22 | CSN6744 | CAN → SYX | May 22, 10:55 UTC | May 22, 11:05 UTC | 10m |
| 2026-05-21 | CSN675R | - | May 21, 06:50 UTC | May 21, 07:05 UTC | 15m |
| 2026-05-05 | CSN6782 | PVG → SYX | May 5, 05:45 UTC | May 5, 14:30 UTC | 8h 45m |
| 2026-05-04 | CSN6623 | SYX → NKG | May 4, 09:10 UTC | May 5, 05:50 UTC | 20h 41m |
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-8900 page for operator, model, and routing details .