Apparatus

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sensors Mode-S transponder

7821D0

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32KD · AIRBUS A-321neo

Hex
7821D0
Octal
36020720
Decimal
7,872,976
Country
CN
Tail
B-32KD
Type
A21N
No current signal · last broadcast 22h ago
Flights observed
99
Distinct callsigns
20
Country
CN
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 7821D0.

Country allocation

The ICAO 24-bit address 7821D0 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
CES505 China Eastern Airlines 8 2026-05-15
CES2007 China Eastern Airlines 6 2026-05-22
CES5034 China Eastern Airlines 5 2026-05-26
CES5033 China Eastern Airlines 5 2026-05-26
CES211 China Eastern Airlines 5 2026-05-22
CES9852 China Eastern Airlines 4 2026-05-29
CES723 China Eastern Airlines 4 2026-05-13
CES518 China Eastern Airlines 4 2026-06-02
CES506 China Eastern Airlines 4 2026-05-15
CES212 China Eastern Airlines 4 2026-05-22
CES724 China Eastern Airlines 3 2026-05-14
CES530 China Eastern Airlines 3 2026-05-23
CES280 China Eastern Airlines 3 2026-05-06
CES279 China Eastern Airlines 3 2026-05-05
CES9851 China Eastern Airlines 2 2026-05-29
CES6011 China Eastern Airlines 2 2026-05-28
CES565 China Eastern Airlines 2 2026-05-14
CES5379 China Eastern Airlines 2 2026-05-27
CES5152 China Eastern Airlines 2 2026-05-02
CES5088 China Eastern Airlines 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CES518 FUK → PVG Jun 2, 06:10 UTCJun 2, 06:20 UTC10m
2026-06-01 CES6014 HAN → PVG Jun 1, 12:05 UTCJun 1, 12:30 UTC25m
2026-06-01 CES272 NRT → PVG Jun 1, 02:10 UTCJun 1, 09:50 UTC7h 40m
2026-05-30 CES271 PVG → NRT May 30, 16:05 UTCMay 31, 11:45 UTC19h 40m
2026-05-30 CES282 SGN → PVG May 30, 06:50 UTCMay 30, 22:40 UTC15h 50m
2026-05-29 CES9852 URC → PKX May 29, 15:00 UTCMay 29, 15:10 UTC10m
2026-05-29 CES9851 PKX → URC May 29, 07:00 UTCMay 29, 07:15 UTC15m
2026-05-28 CES6012 HAN → PVG May 28, 08:20 UTCMay 28, 08:45 UTC25m
2026-05-28 CES6011 PVG → HAN May 28, 06:10 UTCMay 28, 06:35 UTC25m
2026-05-27 CES6011 PVG → HAN May 27, 10:45 UTCMay 28, 06:35 UTC19h 50m
2026-05-27 CES5379 PVG → SYX May 27, 07:00 UTCMay 27, 10:55 UTC3h 55m
2026-05-26 CES5034 ICN → PVG May 26, 08:04 UTCMay 27, 07:15 UTC23h 11m
2026-05-26 CES5034 ICN → PVG May 26, 07:59 UTCMay 26, 08:24 UTC25m
2026-05-26 CES5033 PVG → ICN May 26, 06:10 UTCMay 26, 06:44 UTC35m
2026-05-25 CES5033 PVG → ICN May 25, 08:05 UTCMay 26, 06:44 UTC22h 40m
2026-05-25 CES5034 ICN → PVG May 25, 07:30 UTCMay 25, 08:10 UTC40m
2026-05-25 CES5033 PVG → ICN May 25, 05:35 UTCMay 25, 06:10 UTC35m
2026-05-24 CES5034 ICN → PVG May 24, 08:20 UTCMay 25, 06:10 UTC21h 50m
2026-05-24 CES5033 PVG → ICN May 24, 06:40 UTCMay 24, 07:15 UTC35m
2026-05-23 CES530 NGO → PVG May 23, 05:05 UTCMay 23, 06:05 UTC1h 0m
2026-05-22 CES212 MNL → PVG May 22, 18:45 UTCMay 23, 03:45 UTC8h 59m
2026-05-22 CES211 PVG → MNL May 22, 08:50 UTCMay 22, 16:55 UTC8h 5m
2026-05-22 CES2007 PVG → MFM May 22, 05:50 UTCMay 22, 07:20 UTC1h 30m
2026-05-21 CES2007 PVG → MFM May 21, 10:00 UTCMay 22, 07:20 UTC21h 20m
2026-05-21 CES535Y - May 21, 07:15 UTCMay 21, 07:35 UTC20m
2026-05-20 CES5108 PEK → SHA May 20, 03:10 UTCMay 20, 03:20 UTC10m
2026-05-19 CES2056 MFM → SHA May 19, 12:20 UTCMay 19, 13:10 UTC50m
2026-05-19 CES2055 SHA → MFM May 19, 10:10 UTCMay 19, 10:20 UTC10m
2026-05-19 CES5566 ZUH → SHA May 19, 04:40 UTCMay 19, 05:00 UTC20m
2026-05-19 CES5565 SHA → ZUH May 19, 02:20 UTCMay 19, 02:45 UTC25m
2026-05-18 CES5338 SZX → SHA May 18, 03:45 UTCMay 18, 03:55 UTC10m
2026-05-17 CES5359 PVG → SZX May 17, 15:31 UTCMay 17, 15:50 UTC20m
2026-05-16 CES2008 MFM → PVG May 16, 11:51 UTCMay 16, 13:15 UTC1h 25m
2026-05-16 CES2007 PVG → MFM May 16, 10:01 UTCMay 16, 10:16 UTC15m
2026-05-15 CES2007 PVG → MFM May 15, 14:05 UTCMay 16, 08:05 UTC18h 0m
2026-05-15 CES2007 PVG → MFM May 15, 13:55 UTCMay 16, 08:05 UTC18h 10m
2026-05-15 CES506 HKG → PVG May 15, 13:10 UTCMay 15, 13:25 UTC15m
2026-05-15 CES505 PVG → HKG May 15, 10:05 UTCMay 15, 11:35 UTC1h 30m
2026-05-14 CES566 SIN → PVG May 14, 15:45 UTCMay 14, 19:55 UTC4h 10m
2026-05-14 CES565 PVG → SIN May 14, 02:50 UTCMay 14, 11:50 UTC9h 0m
2026-05-14 CES724 HKG → PVG May 14, 02:05 UTCMay 14, 02:20 UTC15m
2026-05-13 CES723 PVG → HKG May 13, 11:35 UTCMay 13, 12:50 UTC1h 15m
2026-05-13 CES518 FUK → PVG May 13, 05:10 UTCMay 13, 05:20 UTC10m
2026-05-12 CES506 HKG → PVG May 12, 12:25 UTCMay 12, 13:40 UTC1h 15m
2026-05-11 CES505 PVG → HKG May 11, 18:35 UTCMay 12, 10:30 UTC15h 55m
2026-05-11 CES505 PVG → HKG May 11, 15:40 UTCMay 12, 10:30 UTC18h 51m
2026-05-11 CES565 PVG → SIN May 11, 03:05 UTCMay 11, 12:10 UTC9h 5m
2026-05-10 CES272 NRT → PVG May 10, 02:14 UTCMay 10, 03:50 UTC1h 35m
2026-05-09 CES271 PVG → NRT May 9, 04:50 UTCMay 9, 11:35 UTC6h 45m
2026-05-08 CES212 MNL → PVG May 8, 18:45 UTCMay 9, 03:05 UTC8h 20m

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

Mode-S 7821D0 frequently asked

What is Mode-S code 7821D0?
7821D0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32KD.
Where is Mode-S 7821D0 registered?
Mode-S code 7821D0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7821D0 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7821D0, octal 36020720, decimal 7,872,976.
What flights does 7821D0 operate?
Mode-S 7821D0 has broadcast 20 distinct callsigns, including CES505, CES2007, CES5034, CES5033, CES211.