Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7817B6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30AK · AIRBUS A-320neo

Hex
7817B6
Octal
36013666
Decimal
7,870,390
Country
CN
Tail
B-30AK
Type
A20N
No current signal · last broadcast 3h ago
Flights observed
64
Distinct callsigns
18
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 7817B6.

Country allocation

The ICAO 24-bit address 7817B6 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 18 distinct

Callsign Airline Flights Last seen
CSN6299 China Southern Airlines 8 2026-05-13
CSN6300 China Southern Airlines 7 2026-05-13
CSN6966 China Southern Airlines 6 2026-05-25
CSN6326 - 6 2026-05-24
CSN6325 - 6 2026-05-24
CSN676 - 4 2026-05-27
CSN675 - 4 2026-05-27
CSN6327 China Southern Airlines 4 2026-05-29
CSN696 China Southern Airlines 3 2026-05-06
CSN695 China Southern Airlines 3 2026-05-19
CSN6328 - 3 2026-05-29
CSN630 - 2 2026-04-17
CSN629 - 2 2026-04-17
CSN696A - 1 2026-05-20
CSN686 China Southern Airlines 1 2026-05-27
CSN685 China Southern Airlines 1 2026-05-27
CSN5721 - 1 2026-05-29
CSN3604 - 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN5721 - May 29, 16:05 UTCMay 30, 09:05 UTC17h 0m
2026-05-29 CSN6328 - May 29, 14:45 UTCMay 29, 15:05 UTC20m
2026-05-29 CSN6327 DLC → SZX May 29, 09:55 UTCMay 29, 10:15 UTC20m
2026-05-27 CSN676 - May 27, 13:50 UTCMay 28, 04:25 UTC14h 35m
2026-05-27 CSN675 - May 27, 12:10 UTCMay 27, 12:35 UTC25m
2026-05-27 CSN686 ICN → DLC May 27, 02:34 UTCMay 27, 02:59 UTC25m
2026-05-27 CSN685 DLC → ICN May 27, 00:34 UTCMay 27, 00:55 UTC20m
2026-05-25 CSN6966 URC → XIY May 25, 14:10 UTCMay 25, 14:30 UTC20m
2026-05-24 CSN6326 - May 24, 07:00 UTCMay 24, 07:10 UTC10m
2026-05-24 CSN6326 - May 24, 06:00 UTCMay 24, 06:10 UTC10m
2026-05-24 CSN6325 - May 24, 04:00 UTCMay 24, 04:20 UTC20m
2026-05-23 - - May 23, 11:50 UTCMay 23, 12:00 UTC10m
2026-05-22 CSN6327 DLC → SZX May 22, 10:35 UTCMay 22, 11:05 UTC30m
2026-05-21 CSN6966 URC → XIY May 21, 14:30 UTCMay 22, 11:05 UTC20h 35m
2026-05-21 CSN6966 URC → XIY May 21, 06:05 UTCMay 21, 14:50 UTC8h 45m
2026-05-20 CSN6326 - May 20, 10:50 UTCMay 20, 11:00 UTC10m
2026-05-20 CSN6325 - May 20, 07:25 UTCMay 20, 07:45 UTC20m
2026-05-20 CSN696A - May 20, 01:20 UTCMay 20, 01:40 UTC20m
2026-05-19 CSN695 DLC → ICN May 19, 06:45 UTCMay 19, 07:10 UTC25m
2026-05-15 CSN6326 - May 15, 07:15 UTCMay 15, 07:25 UTC10m
2026-05-15 CSN6325 - May 15, 04:10 UTCMay 15, 04:20 UTC10m
2026-05-13 CSN6300 SZX → DLC May 13, 04:30 UTCMay 13, 04:40 UTC10m
2026-05-13 CSN6299 DLC → SZX May 13, 02:15 UTCMay 13, 02:40 UTC25m
2026-05-10 CSN6300 SZX → DLC May 10, 04:09 UTCMay 10, 04:25 UTC15m
2026-05-10 CSN6299 DLC → SZX May 10, 02:24 UTCMay 10, 02:45 UTC20m
2026-05-09 CSN6966 URC → XIY May 9, 14:15 UTCMay 10, 01:39 UTC11h 25m
2026-05-09 CSN6966 URC → XIY May 9, 06:00 UTCMay 10, 01:39 UTC19h 40m
2026-05-08 CSN6325 - May 8, 03:49 UTCMay 8, 04:14 UTC25m
2026-05-06 CSN696 ICN → DLC May 6, 08:45 UTCMay 6, 08:55 UTC10m
2026-05-04 CSN6300 SZX → DLC May 4, 04:15 UTCMay 4, 04:24 UTC10m
2026-05-04 CSN6299 DLC → SZX May 4, 02:39 UTCMay 4, 03:00 UTC20m
2026-05-01 CSN6966 URC → XIY May 1, 05:55 UTCMay 1, 14:40 UTC8h 45m
2026-04-30 CSN676 - Apr 30, 13:50 UTCApr 30, 14:05 UTC15m
2026-04-30 CSN675 - Apr 30, 12:00 UTCApr 30, 12:10 UTC10m
2026-04-29 CSN6326 - Apr 29, 06:15 UTCApr 29, 06:25 UTC10m
2026-04-29 CSN6325 - Apr 29, 04:20 UTCApr 29, 04:34 UTC15m
2026-04-28 CSN6300 SZX → DLC Apr 28, 04:15 UTCApr 28, 04:25 UTC10m
2026-04-28 CSN6299 DLC → SZX Apr 28, 02:15 UTCApr 28, 02:35 UTC20m
2026-04-27 CSN6328 - Apr 27, 12:20 UTCApr 27, 12:30 UTC10m
2026-04-27 CSN6327 DLC → SZX Apr 27, 09:55 UTCApr 27, 10:15 UTC20m
2026-04-25 CSN6300 SZX → DLC Apr 25, 04:30 UTCApr 25, 04:40 UTC10m
2026-04-25 CSN6299 DLC → SZX Apr 25, 02:35 UTCApr 25, 02:50 UTC15m
2026-04-23 CSN6326 - Apr 23, 12:15 UTCApr 23, 12:25 UTC10m
2026-04-23 CSN6325 - Apr 23, 02:55 UTCApr 23, 04:45 UTC1h 50m
2026-04-21 CSN6300 SZX → DLC Apr 21, 04:05 UTCApr 21, 04:20 UTC15m
2026-04-21 CSN6299 DLC → SZX Apr 21, 02:45 UTCApr 21, 02:55 UTC10m
2026-04-21 CSN6299 DLC → SZX Apr 21, 01:40 UTCApr 21, 02:05 UTC25m
2026-04-20 CSN676 - Apr 20, 13:55 UTCApr 20, 14:10 UTC15m
2026-04-20 CSN675 - Apr 20, 11:55 UTCApr 20, 12:20 UTC25m
2026-04-19 CSN3604 - Apr 19, 23:45 UTCApr 19, 23:55 UTC10m

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-30AK page for operator, model, and routing details .

Mode-S 7817B6 frequently asked

What is Mode-S code 7817B6?
7817B6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AK.
Where is Mode-S 7817B6 registered?
Mode-S code 7817B6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817B6 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817B6, octal 36013666, decimal 7,870,390.
What flights does 7817B6 operate?
Mode-S 7817B6 has broadcast 18 distinct callsigns, including CSN6299, CSN6300, CSN6966, CSN6326, CSN6325.