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
- Flights observed
- 185
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- Jul 26, 14:25 UTC
Last known 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 |
| CES280 | - | 8 | 2026-07-15 |
| CES6049 | China Eastern Airlines | 7 | 2026-07-22 |
| CES5379 | - | 7 | 2026-07-08 |
| CES517 | China Eastern Airlines | 7 | 2026-07-23 |
| CES271 | - | 7 | 2026-07-05 |
| CES5352 | - | 6 | 2026-07-04 |
| CES505 | China Eastern Airlines | 6 | 2026-07-25 |
| CES279 | - | 6 | 2026-07-14 |
| CES272 | - | 6 | 2026-07-06 |
| CES5343 | - | 5 | 2026-07-04 |
| CES529 | - | 5 | 2026-07-05 |
| CES501 | China Eastern Airlines | 5 | 2026-06-10 |
| CES7408 | - | 4 | 2026-07-07 |
| CES6050 | - | 4 | 2026-07-22 |
| CES5033 | - | 4 | 2026-06-23 |
| CES212 | China Eastern Airlines | 4 | 2026-07-24 |
| CES211 | China Eastern Airlines | 4 | 2026-07-24 |
| CES2007 | - | 4 | 2026-06-29 |
| CES9852 | China Eastern Airlines | 3 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CES5644 | TSN → SHA | Jul 26, 06:35 UTC | Jul 26, 14:25 UTC | 7h 50m |
| 2026-07-25 | CES506 | HKG → PVG | Jul 25, 13:35 UTC | Jul 26, 11:25 UTC | 21h 51m |
| 2026-07-25 | CES505 | PVG → HKG | Jul 25, 11:55 UTC | Jul 25, 12:10 UTC | 15m |
| 2026-07-24 | CES212 | MNL → PVG | Jul 24, 19:10 UTC | Jul 25, 11:15 UTC | 16h 5m |
| 2026-07-24 | CES211 | PVG → MNL | Jul 24, 08:55 UTC | Jul 24, 17:10 UTC | 8h 15m |
| 2026-07-23 | CES506 | HKG → PVG | Jul 23, 12:25 UTC | Jul 24, 07:10 UTC | 18h 45m |
| 2026-07-23 | CES505 | PVG → HKG | Jul 23, 05:30 UTC | Jul 23, 10:40 UTC | 5h 10m |
| 2026-07-23 | CES517 | PVG → FUK | Jul 23, 03:30 UTC | Jul 23, 04:10 UTC | 40m |
| 2026-07-22 | CES6050 | - | Jul 22, 11:10 UTC | Jul 22, 14:55 UTC | 3h 45m |
| 2026-07-22 | CES6049 | PVG → SIN | Jul 22, 04:35 UTC | Jul 22, 05:20 UTC | 45m |
| 2026-07-20 | CES294 | HIJ → PVG | Jul 20, 04:50 UTC | Jul 20, 05:35 UTC | 45m |
| 2026-07-20 | CES293 | PVG → HIJ | Jul 20, 02:50 UTC | Jul 20, 03:35 UTC | 45m |
| 2026-07-19 | CES9008 | - | Jul 19, 15:45 UTC | Jul 19, 16:15 UTC | 30m |
| 2026-07-19 | CES9011 | - | Jul 19, 01:40 UTC | Jul 19, 11:50 UTC | 10h 10m |
| 2026-07-18 | CES9011 | - | Jul 18, 12:05 UTC | Jul 19, 11:50 UTC | 23h 45m |
| 2026-07-18 | CES6294 | - | Jul 18, 11:35 UTC | Jul 19, 06:05 UTC | 18h 30m |
| 2026-07-18 | CES6294 | - | Jul 18, 08:15 UTC | Jul 19, 06:05 UTC | 21h 50m |
| 2026-07-17 | CES6014 | - | Jul 17, 12:10 UTC | Jul 17, 12:19 UTC | 10m |
| 2026-07-15 | CES280 | - | Jul 15, 06:05 UTC | Jul 16, 03:15 UTC | 21h 10m |
| 2026-07-15 | CES280 | - | Jul 15, 04:40 UTC | Jul 16, 03:15 UTC | 22h 35m |
| 2026-07-14 | CES279 | HKG → CTS | Jul 14, 12:35 UTC | Jul 15, 03:20 UTC | 14h 44m |
| 2026-07-14 | CES505 | - | Jul 14, 05:15 UTC | Jul 14, 11:05 UTC | 5h 50m |
| 2026-07-14 | CES517 | - | Jul 14, 03:05 UTC | Jul 14, 03:20 UTC | 15m |
| 2026-07-13 | CES212 | - | Jul 13, 19:00 UTC | Jul 13, 21:05 UTC | 2h 5m |
| 2026-07-13 | CES211 | - | Jul 13, 09:10 UTC | Jul 13, 17:05 UTC | 7h 55m |
| 2026-07-12 | CES605Z | - | Jul 12, 13:40 UTC | Jul 13, 07:05 UTC | 17h 25m |
| 2026-07-12 | CES6049 | - | Jul 12, 08:05 UTC | Jul 12, 12:05 UTC | 4h 0m |
| 2026-07-11 | CES518 | - | Jul 11, 05:10 UTC | Jul 11, 05:31 UTC | 20m |
| 2026-07-11 | CES517 | - | Jul 11, 03:01 UTC | Jul 11, 03:15 UTC | 15m |
| 2026-07-10 | CES6050 | - | Jul 10, 10:50 UTC | Jul 10, 14:55 UTC | 4h 5m |
| 2026-07-09 | CES6049 | - | Jul 9, 17:35 UTC | Jul 10, 09:00 UTC | 15h 25m |
| 2026-07-09 | CES6049 | - | Jul 9, 12:20 UTC | Jul 10, 09:00 UTC | 20h 40m |
| 2026-07-09 | CES282 | - | Jul 9, 08:05 UTC | Jul 10, 05:40 UTC | 21h 35m |
| 2026-07-09 | CES282 | - | Jul 9, 07:30 UTC | Jul 10, 05:40 UTC | 22h 10m |
| 2026-07-08 | CES5379 | - | Jul 8, 14:10 UTC | Jul 9, 13:45 UTC | 23h 35m |
| 2026-07-08 | CES5379 | - | Jul 8, 13:55 UTC | Jul 9, 08:40 UTC | 18h 45m |
| 2026-07-08 | CES6050 | - | Jul 8, 10:35 UTC | Jul 9, 08:40 UTC | 22h 5m |
| 2026-07-07 | CES7408 | - | Jul 7, 17:10 UTC | Jul 8, 08:30 UTC | 15h 20m |
| 2026-07-07 | CES7408 | - | Jul 7, 12:05 UTC | Jul 8, 08:30 UTC | 20h 25m |
| 2026-07-07 | CES7408 | - | Jul 7, 11:15 UTC | Jul 8, 08:30 UTC | 21h 15m |
| 2026-07-07 | CES7408 | - | Jul 7, 07:00 UTC | Jul 8, 05:05 UTC | 22h 5m |
| 2026-07-06 | CES5380 | - | Jul 6, 12:05 UTC | Jul 7, 12:00 UTC | 23h 55m |
| 2026-07-06 | CES6014 | - | Jul 6, 11:55 UTC | Jul 7, 07:25 UTC | 19h 30m |
| 2026-07-06 | CES6013 | - | Jul 6, 09:40 UTC | Jul 6, 09:50 UTC | 10m |
| 2026-07-06 | CES272 | - | Jul 6, 02:10 UTC | Jul 6, 03:50 UTC | 1h 40m |
| 2026-07-05 | CES271 | - | Jul 5, 05:10 UTC | Jul 5, 11:45 UTC | 6h 35m |
| 2026-07-05 | CES529 | - | Jul 5, 02:40 UTC | Jul 5, 03:40 UTC | 1h 0m |
| 2026-07-04 | CES5352 | - | Jul 4, 13:55 UTC | Jul 4, 14:05 UTC | 10m |
| 2026-07-04 | CES5343 | - | Jul 4, 11:55 UTC | Jul 4, 12:20 UTC | 25m |
| 2026-07-04 | CES5054 | - | Jul 4, 03:20 UTC | Jul 4, 03:45 UTC | 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 .