Apparatus

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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
No current signal · last broadcast 8h ago
Flights observed
115
Distinct callsigns
20
Country
CN
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 7820C1.

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 20 distinct

Callsign Airline Flights Last seen
CSN6310 - 24 2026-07-14
CSN6309 - 19 2026-07-13
CSN6367 - 18 2026-07-13
CSN682 China Southern Airlines 8 2026-06-14
CSN6368 - 6 2026-07-09
CSN6311 - 6 2026-07-05
CSN5867 - 6 2026-06-25
CSN6312 - 4 2026-07-05
CSN681 - 3 2026-06-14
CSN5817 - 3 2026-06-13
CSN6503 - 2 2026-06-30
CSN6414 China Southern Airlines 2 2026-05-19
CSN6403 China Southern Airlines 2 2026-06-09
CSN6340 China Southern Airlines 2 2026-06-20
CSN6507 China Southern Airlines 1 2026-05-07
CSN6505 China Southern Airlines 1 2026-05-27
CSN6501 China Southern Airlines 1 2026-05-03
CSN6347 China Southern Airlines 1 2026-04-21
CSN626 China Southern Airlines 1 2026-04-22
CSN625 China Southern Airlines 1 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN6310 - Jul 14, 09:45 UTCJul 14, 09:55 UTC10m
2026-07-13 CSN6309 - Jul 13, 10:20 UTCJul 14, 05:30 UTC19h 10m
2026-07-13 CSN6367 - Jul 13, 03:40 UTCJul 13, 13:35 UTC9h 55m
2026-07-11 CSN6367 - Jul 11, 02:50 UTCJul 11, 03:01 UTC10m
2026-07-10 CSN6310 - Jul 10, 11:00 UTCJul 10, 11:15 UTC15m
2026-07-10 CSN6309 - Jul 10, 09:20 UTCJul 10, 09:30 UTC10m
2026-07-09 CSN6309 - Jul 9, 14:30 UTCJul 10, 07:00 UTC16h 30m
2026-07-09 CSN6368 - Jul 9, 12:00 UTCJul 10, 07:00 UTC19h 0m
2026-07-09 CSN6368 - Jul 9, 03:25 UTCJul 9, 15:10 UTC11h 45m
2026-07-08 CSN6310 - Jul 8, 11:45 UTCJul 8, 11:55 UTC10m
2026-07-08 CSN6309 - Jul 8, 09:55 UTCJul 8, 10:05 UTC10m
2026-07-08 CSN6309 - Jul 8, 07:25 UTCJul 8, 07:35 UTC10m
2026-07-07 CSN6367 - Jul 7, 02:55 UTCJul 7, 03:10 UTC15m
2026-07-06 CSN6367 - Jul 6, 06:55 UTCJul 7, 03:10 UTC20h 15m
2026-07-05 - - Jul 5, 08:25 UTCJul 6, 06:55 UTC22h 30m
2026-07-05 CSN6312 - Jul 5, 06:00 UTCJul 5, 06:15 UTC15m
2026-07-05 CSN6311 - Jul 5, 04:15 UTCJul 5, 04:25 UTC10m
2026-07-05 CSN6311 - Jul 5, 01:30 UTCJul 5, 01:45 UTC15m
2026-07-04 CSN6311 - Jul 4, 04:20 UTCJul 5, 01:45 UTC21h 25m
2026-07-04 CSN6311 - Jul 4, 04:10 UTCJul 5, 01:45 UTC21h 35m
2026-07-03 CSN6368 - Jul 3, 10:05 UTCJul 4, 04:20 UTC18h 15m
2026-07-03 CSN6367 - Jul 3, 02:55 UTCJul 3, 10:15 UTC7h 20m
2026-07-02 CSN6367 - Jul 2, 10:20 UTCJul 3, 10:15 UTC23h 55m
2026-07-02 CSN6367 - Jul 2, 10:10 UTCJul 3, 03:15 UTC17h 5m
2026-07-01 CSN6368 - Jul 1, 10:20 UTCJul 2, 10:15 UTC23h 55m
2026-07-01 CSN6367 - Jul 1, 03:05 UTCJul 1, 10:20 UTC7h 15m
2026-06-30 CSN6503 - Jun 30, 01:25 UTCJun 30, 01:40 UTC16m
2026-06-28 CSN6367 - Jun 28, 03:09 UTCJun 28, 10:19 UTC7h 10m
2026-06-26 CSN6310 - Jun 26, 12:14 UTCJun 27, 01:49 UTC13h 35m
2026-06-26 CSN6310 - Jun 26, 09:50 UTCJun 26, 09:59 UTC10m
2026-06-25 CSN5867 - Jun 25, 12:44 UTCJun 26, 05:10 UTC16h 25m
2026-06-25 CSN5867 - Jun 25, 09:59 UTCJun 26, 05:10 UTC19h 10m
2026-06-25 CSN6367 - Jun 25, 02:39 UTCJun 25, 13:29 UTC10h 50m
2026-06-24 CSN6310 - Jun 24, 12:20 UTCJun 25, 09:59 UTC21h 40m
2026-06-24 CSN6310 - Jun 24, 12:09 UTCJun 25, 09:59 UTC21h 50m
2026-06-24 CSN6310 - Jun 24, 09:49 UTCJun 24, 10:04 UTC15m
2026-06-24 CSN6309 - Jun 24, 07:40 UTCJun 24, 07:59 UTC20m
2026-06-23 CSN5867 - Jun 23, 12:49 UTCJun 24, 05:20 UTC16h 30m
2026-06-23 CSN5867 - Jun 23, 09:59 UTCJun 24, 05:20 UTC19h 20m
2026-06-23 CSN5867 - Jun 23, 02:49 UTCJun 23, 13:29 UTC10h 40m
2026-06-22 CSN6367 - Jun 22, 12:05 UTCJun 23, 10:15 UTC22h 10m
2026-06-22 CSN6310 - Jun 22, 09:40 UTCJun 22, 09:49 UTC10m
2026-06-22 CSN6309 - Jun 22, 07:30 UTCJun 22, 07:40 UTC10m
2026-06-22 CSN6309 - Jun 22, 04:54 UTCJun 22, 05:04 UTC10m
2026-06-21 CSN6368 - Jun 21, 09:55 UTCJun 21, 13:39 UTC3h 45m
2026-06-20 CSN6340 CAN → SHE Jun 20, 12:50 UTCJun 21, 03:05 UTC14h 15m
2026-06-20 CSN6340 CAN → SHE Jun 20, 05:54 UTCJun 21, 03:05 UTC21h 10m
2026-06-19 CSN6310 - Jun 19, 14:04 UTCJun 20, 06:10 UTC16h 5m
2026-06-19 CSN6310 - Jun 19, 11:49 UTCJun 19, 11:59 UTC10m
2026-06-16 - - Jun 16, 02:40 UTCJun 16, 07:34 UTC4h 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-32GQ page for operator, model, and routing details .

Mode-S 7820C1 frequently asked

What is Mode-S code 7820C1?
7820C1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32GQ.
Where is Mode-S 7820C1 registered?
Mode-S code 7820C1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820C1 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820C1, octal 36020301, decimal 7,872,705.
What flights does 7820C1 operate?
Mode-S 7820C1 has broadcast 20 distinct callsigns, including CSN6310, CSN6309, CSN6367, CSN682, CSN6368.