Apparatus

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sensors Mode-S transponder

7817B5

ICAO 24-bit transponder address · allocated to China

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

Hex
7817B5
Octal
36013665
Decimal
7,870,389
Country
CN
Tail
B-30AJ
Type
A20N
No current signal · last broadcast 17h ago
Flights observed
107
Distinct callsigns
20
Country
CN
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 7817B5.

Country allocation

The ICAO 24-bit address 7817B5 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
CSN696 - 14 2026-07-17
CSN676 - 14 2026-07-16
CSN6299 - 12 2026-07-14
CSN695 - 11 2026-07-17
CSN675 - 11 2026-07-16
CSN6300 - 10 2026-07-12
CSN6326 - 7 2026-06-26
CSN6325 - 5 2026-06-24
CSN6327 - 4 2026-06-27
CSN6966 China Southern Airlines 3 2026-06-21
CSN6328 - 3 2026-06-13
CSN8420 - 2 2026-07-16
CSN6433 China Southern Airlines 1 2026-05-07
CSN6338 China Southern Airlines 1 2026-05-06
CSN6337 China Southern Airlines 1 2026-05-06
CSN630 - 1 2026-04-22
CSN629 - 1 2026-04-21
CSN6063 - 1 2026-07-02
CSN5722 - 1 2026-06-15
CSN324 - 1 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSN696 - Jul 17, 08:54 UTCJul 17, 09:25 UTC30m
2026-07-17 CSN695 - Jul 17, 07:20 UTCJul 17, 07:44 UTC25m
2026-07-16 CSN676 - Jul 16, 14:05 UTCJul 16, 14:29 UTC25m
2026-07-16 CSN675 - Jul 16, 11:45 UTCJul 16, 12:09 UTC25m
2026-07-16 CSN8420 - Jul 16, 00:15 UTCJul 16, 08:45 UTC8h 30m
2026-07-15 CSN676 - Jul 15, 13:55 UTCJul 15, 14:20 UTC25m
2026-07-15 CSN675 - Jul 15, 11:50 UTCJul 15, 12:10 UTC20m
2026-07-15 CSN8420 - Jul 15, 00:25 UTCJul 15, 08:40 UTC8h 15m
2026-07-14 CSN6299 - Jul 14, 02:20 UTCJul 14, 02:55 UTC35m
2026-07-12 CSN6300 - Jul 12, 04:15 UTCJul 12, 04:25 UTC10m
2026-07-12 CSN6299 - Jul 12, 02:05 UTCJul 12, 02:25 UTC20m
2026-07-08 CSN696 - Jul 8, 08:30 UTCJul 8, 08:55 UTC25m
2026-07-08 CSN695 - Jul 8, 06:35 UTCJul 8, 07:00 UTC25m
2026-07-06 - - Jul 6, 08:00 UTCJul 6, 14:40 UTC6h 40m
2026-07-03 CSN676 - Jul 3, 14:05 UTCJul 3, 14:30 UTC25m
2026-07-03 CSN675 - Jul 3, 11:50 UTCJul 3, 12:15 UTC25m
2026-07-02 CSN6063 - Jul 2, 05:45 UTCJul 2, 12:50 UTC7h 5m
2026-07-01 CSN324 - Jul 1, 14:25 UTCJul 2, 02:50 UTC12h 25m
2026-07-01 CSN3082 - Jul 1, 09:15 UTCJul 1, 10:45 UTC1h 30m
2026-07-01 CSN3081 - Jul 1, 07:35 UTCJul 1, 08:00 UTC25m
2026-06-29 CSN6299 - Jun 29, 02:30 UTCJun 29, 02:39 UTC10m
2026-06-27 CSN6327 - Jun 27, 10:00 UTCJun 27, 10:10 UTC10m
2026-06-26 CSN6326 - Jun 26, 06:15 UTCJun 26, 06:29 UTC15m
2026-06-25 CSN6300 - Jun 25, 04:45 UTCJun 25, 04:54 UTC10m
2026-06-24 CSN6326 - Jun 24, 06:04 UTCJun 24, 06:15 UTC10m
2026-06-24 CSN6325 - Jun 24, 04:10 UTCJun 24, 04:24 UTC15m
2026-06-22 CSN6326 - Jun 22, 06:10 UTCJun 22, 06:19 UTC10m
2026-06-22 CSN6325 - Jun 22, 04:09 UTCJun 22, 04:24 UTC15m
2026-06-21 CSN6966 URC → XIY Jun 21, 14:19 UTCJun 21, 14:40 UTC20m
2026-06-20 CSN6300 - Jun 20, 04:14 UTCJun 20, 04:24 UTC10m
2026-06-20 CSN6299 - Jun 20, 02:19 UTCJun 20, 02:29 UTC10m
2026-06-18 CSN6326 - Jun 18, 07:35 UTCJun 18, 07:50 UTC15m
2026-06-18 CSN6325 - Jun 18, 05:05 UTCJun 18, 05:15 UTC10m
2026-06-15 CSN5722 - Jun 15, 12:05 UTCJun 15, 12:19 UTC15m
2026-06-14 CSN6300 SZX → DLC Jun 14, 04:25 UTCJun 14, 04:35 UTC10m
2026-06-14 CSN6299 - Jun 14, 02:20 UTCJun 14, 02:30 UTC10m
2026-06-13 CSN6328 - Jun 13, 12:15 UTCJun 13, 12:25 UTC10m
2026-06-13 CSN6327 DLC → SZX Jun 13, 09:50 UTCJun 13, 10:10 UTC20m
2026-06-10 CSN6966 URC → XIY Jun 10, 03:05 UTCJun 10, 14:50 UTC11h 45m
2026-06-09 CSN6328 - Jun 9, 12:15 UTCJun 9, 12:25 UTC10m
2026-06-09 CSN6327 DLC → SZX Jun 9, 10:05 UTCJun 9, 10:15 UTC10m
2026-06-06 CSN696 ICN → DLC Jun 6, 08:35 UTCJun 6, 08:50 UTC15m
2026-06-06 CSN695 DLC → ICN Jun 6, 06:40 UTCJun 6, 07:05 UTC25m
2026-06-05 CSN676 - Jun 5, 14:05 UTCJun 5, 14:25 UTC20m
2026-06-05 CSN675 - Jun 5, 11:45 UTCJun 5, 12:05 UTC20m
2026-06-05 CSN696 ICN → DLC Jun 5, 08:35 UTCJun 5, 09:00 UTC25m
2026-06-05 CSN695 DLC → ICN Jun 5, 06:35 UTCJun 5, 07:00 UTC25m
2026-06-04 CSN676 - Jun 4, 13:45 UTCJun 4, 14:10 UTC25m
2026-06-04 CSN675 - Jun 4, 11:55 UTCJun 4, 12:15 UTC20m
2026-06-04 CSN696 ICN → DLC Jun 4, 08:35 UTCJun 4, 08:55 UTC20m

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

Mode-S 7817B5 frequently asked

What is Mode-S code 7817B5?
7817B5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AJ.
Where is Mode-S 7817B5 registered?
Mode-S code 7817B5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817B5 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817B5, octal 36013665, decimal 7,870,389.
What flights does 7817B5 operate?
Mode-S 7817B5 has broadcast 20 distinct callsigns, including CSN696, CSN676, CSN6299, CSN695, CSN675.