sensors Mode-S transponder
7820C1
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32GQ · AIRBUS A-321neo
- Hex
- 7820C1
- Octal
- 36020301
- Decimal
- 7,872,705
- Country
- CN
- Tail
- B-32GQ
- Type
- A21N
- Flights observed
- 49
- Distinct callsigns
- 19
- Country
- CN
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 7820C1 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CSN6310 | China Southern Airlines | 12 | 2026-05-27 |
| CSN6309 | China Southern Airlines | 10 | 2026-05-27 |
| CSN682 | China Southern Airlines | 6 | 2026-05-13 |
| CSN6367 | China Southern Airlines | 5 | 2026-05-09 |
| CSN6414 | China Southern Airlines | 2 | 2026-05-19 |
| CSN681 | China Southern Airlines | 1 | 2026-05-13 |
| CSN6507 | China Southern Airlines | 1 | 2026-05-07 |
| CSN6505 | China Southern Airlines | 1 | 2026-05-27 |
| CSN6503 | China Southern Airlines | 1 | 2026-05-24 |
| CSN6501 | China Southern Airlines | 1 | 2026-05-03 |
| CSN6368 | China Southern Airlines | 1 | 2026-05-01 |
| CSN6347 | China Southern Airlines | 1 | 2026-04-21 |
| CSN6312 | China Southern Airlines | 1 | 2026-05-07 |
| CSN6311 | China Southern Airlines | 1 | 2026-04-13 |
| CSN626 | China Southern Airlines | 1 | 2026-04-22 |
| CSN625 | China Southern Airlines | 1 | 2026-04-22 |
| CSN5867 | China Southern Airlines | 1 | 2026-04-16 |
| CSN3602 | China Southern Airlines | 1 | 2026-04-21 |
| CSN3489 | China Southern Airlines | 1 | 2026-04-26 |
Recent flights last 49
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | CSN6505 | SHE → PVG | May 27, 12:05 UTC | May 28, 01:55 UTC | 13h 50m |
| 2026-05-27 | CSN6310 | SZX → SHE | May 27, 09:45 UTC | May 27, 10:05 UTC | 20m |
| 2026-05-27 | CSN6309 | SHE → SZX | May 27, 07:45 UTC | May 27, 07:55 UTC | 10m |
| 2026-05-27 | CSN6309 | SHE → SZX | May 27, 05:04 UTC | May 27, 05:19 UTC | 15m |
| 2026-05-25 | CSN6310 | SZX → SHE | May 25, 12:05 UTC | May 25, 12:15 UTC | 10m |
| 2026-05-25 | CSN6310 | SZX → SHE | May 25, 09:45 UTC | May 25, 10:00 UTC | 15m |
| 2026-05-25 | CSN6309 | SHE → SZX | May 25, 07:40 UTC | May 25, 07:55 UTC | 15m |
| 2026-05-24 | CSN6503 | SHE → PVG | May 24, 00:25 UTC | May 24, 10:15 UTC | 9h 50m |
| 2026-05-19 | CSN6414 | XIY → SHE | May 19, 05:30 UTC | May 20, 01:05 UTC | 19h 35m |
| 2026-05-18 | CSN6414 | XIY → SHE | May 18, 12:00 UTC | May 19, 05:50 UTC | 17h 49m |
| 2026-05-18 | CSN6310 | SZX → SHE | May 18, 09:40 UTC | May 18, 09:55 UTC | 15m |
| 2026-05-18 | CSN6309 | SHE → SZX | May 18, 07:35 UTC | May 18, 07:45 UTC | 10m |
| 2026-05-18 | CSN6309 | SHE → SZX | May 18, 04:55 UTC | May 18, 05:10 UTC | 15m |
| 2026-05-13 | CSN682 | ICN → SHE | May 13, 04:15 UTC | May 13, 07:55 UTC | 3h 40m |
| 2026-05-13 | CSN681 | SHE → ICN | May 13, 01:50 UTC | May 13, 02:00 UTC | 10m |
| 2026-05-11 | CSN6310 | SZX → SHE | May 11, 09:40 UTC | May 11, 09:50 UTC | 10m |
| 2026-05-09 | CSN6367 | SHE → CAN | May 9, 03:05 UTC | May 9, 03:30 UTC | 25m |
| 2026-05-07 | CSN6507 | SHE → PVG | May 7, 08:20 UTC | May 7, 12:05 UTC | 3h 45m |
| 2026-05-07 | CSN6312 | SZX → SHE | May 7, 05:55 UTC | May 7, 06:10 UTC | 15m |
| 2026-05-06 | CSN6310 | SZX → SHE | May 6, 11:55 UTC | May 7, 01:20 UTC | 13h 25m |
| 2026-05-06 | CSN6310 | SZX → SHE | May 6, 09:35 UTC | May 6, 09:45 UTC | 10m |
| 2026-05-06 | CSN6309 | SHE → SZX | May 6, 07:35 UTC | May 6, 07:50 UTC | 15m |
| 2026-05-05 | CSN6309 | SHE → SZX | May 5, 10:20 UTC | May 6, 05:10 UTC | 18h 50m |
| 2026-05-05 | CSN6367 | SHE → CAN | May 5, 03:00 UTC | May 5, 13:25 UTC | 10h 25m |
| 2026-05-04 | CSN6367 | SHE → CAN | May 4, 07:45 UTC | May 5, 03:25 UTC | 19h 41m |
| 2026-05-04 | CSN682 | ICN → SHE | May 4, 04:00 UTC | May 4, 07:45 UTC | 3h 45m |
| 2026-05-03 | CSN6501 | SHE → PVG | May 3, 07:20 UTC | May 4, 01:30 UTC | 18h 10m |
| 2026-05-03 | CSN682 | ICN → SHE | May 3, 04:10 UTC | May 3, 04:20 UTC | 10m |
| 2026-05-02 | CSN6310 | SZX → SHE | May 2, 11:55 UTC | May 2, 12:05 UTC | 10m |
| 2026-05-02 | CSN6310 | SZX → SHE | May 2, 09:40 UTC | May 2, 09:50 UTC | 10m |
| 2026-05-01 | CSN6368 | CAN → SHE | May 1, 10:20 UTC | May 2, 05:20 UTC | 19h 0m |
| 2026-05-01 | CSN6367 | SHE → CAN | May 1, 03:05 UTC | May 1, 13:25 UTC | 10h 20m |
| 2026-04-30 | CSN682 | ICN → SHE | Apr 30, 04:05 UTC | Apr 30, 04:20 UTC | 15m |
| 2026-04-29 | CSN6310 | SZX → SHE | Apr 29, 10:00 UTC | Apr 29, 10:10 UTC | 10m |
| 2026-04-28 | CSN6309 | SHE → SZX | Apr 28, 15:10 UTC | Apr 29, 05:35 UTC | 14h 25m |
| 2026-04-28 | CSN6367 | SHE → CAN | Apr 28, 05:10 UTC | Apr 28, 15:50 UTC | 10h 40m |
| 2026-04-26 | CSN3489 | CAN → KMG | Apr 26, 11:25 UTC | Apr 26, 11:35 UTC | 10m |
| 2026-04-22 | CSN626 | DPS → CAN | Apr 22, 20:55 UTC | Apr 22, 21:25 UTC | 30m |
| 2026-04-22 | CSN625 | CAN → DPS | Apr 22, 10:55 UTC | Apr 22, 19:10 UTC | 8h 15m |
| 2026-04-21 | CSN6347 | SHE → CAN | Apr 21, 15:25 UTC | Apr 22, 06:25 UTC | 15h 0m |
| 2026-04-21 | CSN3602 | SHE → CAN | Apr 21, 08:40 UTC | Apr 22, 06:25 UTC | 21h 45m |
| 2026-04-20 | CSN682 | ICN → SHE | Apr 20, 04:15 UTC | Apr 20, 07:30 UTC | 3h 15m |
| 2026-04-19 | CSN682 | ICN → SHE | Apr 19, 06:00 UTC | Apr 19, 09:20 UTC | 3h 20m |
| 2026-04-17 | CSN6310 | SZX → SHE | Apr 17, 10:50 UTC | Apr 17, 11:00 UTC | 10m |
| 2026-04-17 | CSN6309 | SHE → SZX | Apr 17, 08:55 UTC | Apr 17, 09:15 UTC | 20m |
| 2026-04-16 | CSN5867 | SHE → HGH | Apr 16, 13:30 UTC | Apr 16, 13:44 UTC | 15m |
| 2026-04-15 | CSN6310 | SZX → SHE | Apr 15, 11:25 UTC | Apr 15, 11:35 UTC | 10m |
| 2026-04-15 | CSN6309 | SHE → SZX | Apr 15, 08:40 UTC | Apr 15, 08:55 UTC | 15m |
| 2026-04-13 | CSN6311 | SHE → SZX | Apr 13, 03:55 UTC | Apr 13, 04:05 UTC | 10m |
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-32GQ page for operator, model, and routing details .