Apparatus

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sensors Mode-S transponder

7821E0

ICAO 24-bit transponder address · allocated to China

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

Hex
7821E0
Octal
36020740
Decimal
7,872,992
Country
CN
Tail
B-32KF
Type
A21N
Broadcasting now · callsign CES505 · 32,100 ft
Flights observed
164
Distinct callsigns
20
Country
CN
Last broadcast
4h ago

Current position

7821E0 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7821E0 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
CES282 - 13 2026-07-09
CES5379 - 7 2026-07-08
CES271 - 7 2026-07-05
CES6049 - 6 2026-07-12
CES5352 - 6 2026-07-04
CES517 - 6 2026-07-14
CES280 - 6 2026-06-28
CES272 - 6 2026-07-06
CES5343 - 5 2026-07-04
CES529 - 5 2026-07-05
CES501 China Eastern Airlines 5 2026-06-10
CES279 - 5 2026-06-27
CES7408 - 4 2026-07-07
CES5033 - 4 2026-06-23
CES2007 - 4 2026-06-29
CES9852 China Eastern Airlines 3 2026-05-05
CES9851 China Eastern Airlines 3 2026-05-05
CES724 - 3 2026-06-12
CES723 China Eastern Airlines 3 2026-06-11
CES6050 - 3 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CES518 - Jul 14, 05:15 UTCJul 14, 05:40 UTC25m
2026-07-14 CES517 - Jul 14, 03:05 UTCJul 14, 03:20 UTC15m
2026-07-13 CES212 - Jul 13, 19:00 UTCJul 13, 21:05 UTC2h 5m
2026-07-13 CES211 - Jul 13, 09:10 UTCJul 13, 17:05 UTC7h 55m
2026-07-12 CES605Z - Jul 12, 13:40 UTCJul 13, 07:05 UTC17h 25m
2026-07-12 CES6049 - Jul 12, 08:05 UTCJul 12, 12:05 UTC4h 0m
2026-07-11 CES518 - Jul 11, 05:10 UTCJul 11, 05:31 UTC20m
2026-07-11 CES517 - Jul 11, 03:01 UTCJul 11, 03:15 UTC15m
2026-07-10 CES6050 - Jul 10, 10:50 UTCJul 10, 14:55 UTC4h 5m
2026-07-09 CES6049 - Jul 9, 17:35 UTCJul 10, 09:00 UTC15h 25m
2026-07-09 CES6049 - Jul 9, 12:20 UTCJul 10, 09:00 UTC20h 40m
2026-07-09 CES282 - Jul 9, 08:05 UTCJul 10, 05:40 UTC21h 35m
2026-07-09 CES282 - Jul 9, 07:30 UTCJul 10, 05:40 UTC22h 10m
2026-07-08 CES5379 - Jul 8, 14:10 UTCJul 9, 13:45 UTC23h 35m
2026-07-08 CES5379 - Jul 8, 13:55 UTCJul 9, 08:40 UTC18h 45m
2026-07-08 CES6050 - Jul 8, 10:35 UTCJul 9, 08:40 UTC22h 5m
2026-07-07 CES7408 - Jul 7, 17:10 UTCJul 8, 08:30 UTC15h 20m
2026-07-07 CES7408 - Jul 7, 12:05 UTCJul 8, 08:30 UTC20h 25m
2026-07-07 CES7408 - Jul 7, 11:15 UTCJul 8, 08:30 UTC21h 15m
2026-07-07 CES7408 - Jul 7, 07:00 UTCJul 8, 05:05 UTC22h 5m
2026-07-06 CES5380 - Jul 6, 12:05 UTCJul 7, 12:00 UTC23h 55m
2026-07-06 CES6014 - Jul 6, 11:55 UTCJul 7, 07:25 UTC19h 30m
2026-07-06 CES6013 - Jul 6, 09:40 UTCJul 6, 09:50 UTC10m
2026-07-06 CES272 - Jul 6, 02:10 UTCJul 6, 03:50 UTC1h 40m
2026-07-05 CES271 - Jul 5, 05:10 UTCJul 5, 11:45 UTC6h 35m
2026-07-05 CES529 - Jul 5, 02:40 UTCJul 5, 03:40 UTC1h 0m
2026-07-04 CES5352 - Jul 4, 13:55 UTCJul 4, 14:05 UTC10m
2026-07-04 CES5343 - Jul 4, 11:55 UTCJul 4, 12:20 UTC25m
2026-07-04 CES5054 - Jul 4, 03:20 UTCJul 4, 03:45 UTC25m
2026-07-03 CES6050 - Jul 3, 10:55 UTCJul 4, 02:00 UTC15h 5m
2026-07-02 CES6049 - Jul 2, 17:05 UTCJul 3, 09:25 UTC16h 20m
2026-07-02 CES6049 - Jul 2, 12:10 UTCJul 3, 09:25 UTC21h 15m
2026-07-02 CES6049 - Jul 2, 11:25 UTCJul 3, 09:25 UTC22h 0m
2026-07-01 CES6294 - Jul 1, 12:30 UTCJul 2, 11:55 UTC23h 25m
2026-07-01 CES6399 - Jul 1, 09:40 UTCJul 1, 12:40 UTC3h 0m
2026-07-01 CES5152 - Jul 1, 01:30 UTCJul 1, 01:40 UTC10m
2026-06-30 CES518 - Jun 30, 05:35 UTCJun 30, 06:00 UTC25m
2026-06-30 CES517 - Jun 30, 03:25 UTCJun 30, 03:40 UTC15m
2026-06-29 CES548 - Jun 29, 19:44 UTCJun 29, 22:00 UTC2h 15m
2026-06-29 CES547 PVG → BKK Jun 29, 09:05 UTCJun 29, 17:14 UTC8h 10m
2026-06-29 CES2007 - Jun 29, 06:54 UTCJun 29, 07:05 UTC10m
2026-06-29 CES2007 - Jun 29, 05:54 UTCJun 29, 06:14 UTC20m
2026-06-28 CES280 - Jun 28, 08:05 UTCJun 29, 06:14 UTC22h 10m
2026-06-28 CES280 - Jun 28, 06:15 UTCJun 29, 05:59 UTC23h 45m
2026-06-27 CES279 - Jun 27, 12:19 UTCJun 28, 04:50 UTC16h 30m
2026-06-27 CES505 - Jun 27, 05:25 UTCJun 27, 10:50 UTC5h 25m
2026-06-27 CES517 - Jun 27, 03:15 UTCJun 27, 03:30 UTC15m
2026-06-26 CES282 - Jun 26, 06:50 UTCJun 26, 22:25 UTC15h 35m
2026-06-26 CES5152 - Jun 26, 00:45 UTCJun 26, 00:55 UTC10m
2026-06-24 CES280 - Jun 24, 05:24 UTCJun 24, 07:50 UTC2h 25m

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

Mode-S 7821E0 frequently asked

What is Mode-S code 7821E0?
7821E0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32KF.
Where is Mode-S 7821E0 registered?
Mode-S code 7821E0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7821E0 broadcasting right now?
Yes. Mode-S 7821E0 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7821E0, octal 36020740, decimal 7,872,992.
What flights does 7821E0 operate?
Mode-S 7821E0 has broadcast 20 distinct callsigns, including CES282, CES5379, CES271, CES6049, CES5352.