Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7821CD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32K9 · AIRBUS A-320neo

Hex
7821CD
Octal
36020715
Decimal
7,872,973
Country
CN
Tail
B-32K9
Type
A20N
No current signal · last broadcast 6h ago
Flights observed
67
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7821CD.

Country allocation

The ICAO 24-bit address 7821CD 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
CES5068 - 7 2026-06-27
CES891 - 6 2026-07-09
CES5067 - 6 2026-06-27
CES892 - 4 2026-06-21
CES5644 - 4 2026-07-14
CES726 China Eastern Airlines 3 2026-06-10
CES509 China Eastern Airlines 3 2026-05-09
CES5061 - 3 2026-07-09
CES5053 - 3 2026-07-02
CES9991 China Eastern Airlines 2 2026-04-25
CES725 China Eastern Airlines 2 2026-06-09
CES5549 - 2 2026-06-19
CES510 China Eastern Airlines 2 2026-05-10
CES2067 China Eastern Airlines 2 2026-04-22
CES9992 China Eastern Airlines 1 2026-04-25
CES9964 China Eastern Airlines 1 2026-05-07
CES6350 - 1 2026-06-30
CES6327 China Eastern Airlines 1 2026-04-29
CES6311 - 1 2026-07-14
CES6278 China Eastern Airlines 1 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CES6311 - Jul 14, 15:05 UTCJul 14, 15:20 UTC15m
2026-07-14 CES5644 - Jul 14, 08:10 UTCJul 14, 08:40 UTC30m
2026-07-10 CES5062 - Jul 10, 05:55 UTCJul 10, 06:35 UTC40m
2026-07-09 CES5061 - Jul 9, 12:10 UTCJul 10, 04:30 UTC16h 20m
2026-07-09 CES5061 - Jul 9, 07:20 UTCJul 10, 04:30 UTC21h 10m
2026-07-09 CES5061 ICN → ICN Jul 9, 07:05 UTCJul 10, 04:30 UTC21h 25m
2026-07-09 CES891 - Jul 9, 05:30 UTCJul 9, 06:00 UTC30m
2026-07-07 CES5644 - Jul 7, 09:50 UTCJul 7, 10:50 UTC1h 0m
2026-07-03 CES5652 - Jul 3, 06:45 UTCJul 3, 13:35 UTC6h 50m
2026-07-03 CES891 - Jul 3, 05:00 UTCJul 3, 05:20 UTC20m
2026-07-02 CES5054 - Jul 2, 03:00 UTCJul 2, 03:25 UTC25m
2026-07-02 CES5053 - Jul 2, 01:10 UTCJul 2, 01:50 UTC40m
2026-07-01 CES5614 - Jul 1, 15:05 UTCJul 1, 15:40 UTC35m
2026-06-30 CES6350 - Jun 30, 00:55 UTCJun 30, 15:15 UTC14h 21m
2026-06-27 CES5068 - Jun 27, 08:25 UTCJun 27, 08:44 UTC20m
2026-06-27 CES5067 - Jun 27, 06:40 UTCJun 27, 07:10 UTC30m
2026-06-21 CES892 - Jun 21, 06:44 UTCJun 21, 11:49 UTC5h 5m
2026-06-21 CES891 - Jun 21, 05:15 UTCJun 21, 05:35 UTC20m
2026-06-20 CES6278 DSN → PVG Jun 20, 06:35 UTCJun 20, 14:35 UTC8h 0m
2026-06-19 CES5644 - Jun 19, 11:45 UTCJun 20, 07:04 UTC19h 20m
2026-06-19 CES5549 - Jun 19, 07:54 UTCJun 20, 07:04 UTC23h 10m
2026-06-15 CES5068 - Jun 15, 08:20 UTCJun 15, 08:35 UTC15m
2026-06-15 CES5067 - Jun 15, 06:04 UTCJun 15, 06:35 UTC30m
2026-06-14 CES5644 - Jun 14, 06:40 UTCJun 14, 07:10 UTC30m
2026-06-10 CES726 HKG → PVG Jun 10, 00:45 UTCJun 10, 11:50 UTC11h 5m
2026-06-09 CES726 HKG → PVG Jun 9, 23:50 UTCJun 10, 00:00 UTC10m
2026-06-09 CES725 PVG → HKG Jun 9, 15:05 UTCJun 9, 15:20 UTC15m
2026-06-08 CES5068 BKK → TYN Jun 8, 08:10 UTCJun 8, 08:20 UTC10m
2026-06-06 CES5068 BKK → TYN Jun 6, 08:25 UTCJun 6, 08:35 UTC10m
2026-06-06 CES5067 TYN → BKK Jun 6, 06:10 UTCJun 6, 06:20 UTC10m
2026-06-05 CES5068 BKK → TYN Jun 5, 08:15 UTCJun 5, 08:25 UTC10m
2026-06-04 CES5053 PVG → TAE Jun 4, 01:45 UTCJun 4, 01:55 UTC10m
2026-06-03 CES5067 TYN → BKK Jun 3, 06:10 UTCJun 3, 06:25 UTC15m
2026-06-02 CES892 ICN → YNJ Jun 2, 06:45 UTCJun 2, 11:45 UTC5h 0m
2026-06-02 CES891 YNJ → ICN Jun 2, 05:00 UTCJun 2, 05:20 UTC20m
2026-05-29 CES726 HKG → PVG May 29, 23:55 UTCMay 30, 01:10 UTC1h 15m
2026-05-29 CES725 PVG → HKG May 29, 14:00 UTCMay 29, 15:30 UTC1h 30m
2026-05-26 CES5068 BKK → TYN May 26, 08:10 UTCMay 26, 08:19 UTC10m
2026-05-26 CES5067 TYN → BKK May 26, 06:49 UTCMay 26, 06:59 UTC10m
2026-05-23 CES5068 BKK → TYN May 23, 08:15 UTCMay 23, 08:25 UTC10m
2026-05-23 CES5067 TYN → BKK May 23, 06:25 UTCMay 23, 06:40 UTC15m
2026-05-22 CES892 ICN → YNJ May 22, 06:55 UTCMay 22, 11:35 UTC4h 39m
2026-05-22 CES891 YNJ → ICN May 22, 05:20 UTCMay 22, 05:45 UTC25m
2026-05-21 CES5053 PVG → TAE May 21, 01:30 UTCMay 21, 01:40 UTC10m
2026-05-10 CES510 HKG → PVG May 10, 09:24 UTCMay 10, 10:45 UTC1h 20m
2026-05-09 CES509 PVG → HKG May 9, 13:45 UTCMay 10, 07:25 UTC17h 40m
2026-05-07 CES9964 DLC → LHW May 7, 10:55 UTCMay 7, 14:00 UTC3h 5m
2026-05-03 CES5158 PEK → PVG May 3, 06:50 UTCMay 3, 07:00 UTC10m
2026-05-02 CES5100 PEK → PVG May 2, 23:25 UTCMay 2, 23:35 UTC10m
2026-04-30 CES5325 SHA → SZX Apr 30, 16:40 UTCApr 30, 16:55 UTC15m

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-32K9 page for operator, model, and routing details .

Mode-S 7821CD frequently asked

What is Mode-S code 7821CD?
7821CD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32K9.
Where is Mode-S 7821CD registered?
Mode-S code 7821CD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7821CD broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7821CD, octal 36020715, decimal 7,872,973.
What flights does 7821CD operate?
Mode-S 7821CD has broadcast 20 distinct callsigns, including CES5068, CES891, CES5067, CES892, CES5644.