Apparatus

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sensors Mode-S transponder

781B95

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-323U · AIRBUS A-321neo

Hex
781B95
Octal
36015625
Decimal
7,871,381
Country
CN
Tail
B-323U
Type
A21N
No current signal · last broadcast 12h ago
Flights observed
59
Distinct callsigns
14
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 781B95.

Country allocation

The ICAO 24-bit address 781B95 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 14 distinct

Callsign Airline Flights Last seen
CDC8629 - 14 2026-05-06
CDC8630 - 13 2026-05-07
CDC8787 - 6 2026-05-29
CDC8737 Zhejiang Loong Airlines 6 2026-05-29
CDC8859 Zhejiang Loong Airlines 3 2026-06-01
CDC8285 Zhejiang Loong Airlines 3 2026-05-29
CDC8206 Zhejiang Loong Airlines 3 2026-05-24
CDC8788 - 2 2026-05-31
CDC8738 Zhejiang Loong Airlines 2 2026-05-31
CDC8966 Zhejiang Loong Airlines 1 2026-04-19
CDC8965 Zhejiang Loong Airlines 1 2026-04-19
CDC8860 Zhejiang Loong Airlines 1 2026-06-01
CDC8231 Zhejiang Loong Airlines 1 2026-05-08
CDC8059 - 1 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 - - Jun 2, 13:25 UTCJun 2, 13:35 UTC10m
2026-06-01 CDC8860 CAN → HGH Jun 1, 10:50 UTCJun 1, 11:00 UTC10m
2026-06-01 CDC8859 HGH → CAN Jun 1, 08:15 UTCJun 1, 09:05 UTC50m
2026-05-31 CDC8738 SZX → HGH May 31, 15:30 UTCMay 31, 15:45 UTC15m
2026-05-31 CDC8788 - May 31, 12:50 UTCMay 31, 13:10 UTC20m
2026-05-29 CDC8285 HGH → CAN May 29, 13:40 UTCMay 29, 18:35 UTC4h 55m
2026-05-29 CDC8787 - May 29, 05:20 UTCMay 29, 05:35 UTC15m
2026-05-29 CDC8737 HGH → SZX May 29, 03:10 UTCMay 29, 03:30 UTC20m
2026-05-28 CDC8787 - May 28, 05:30 UTCMay 28, 05:40 UTC10m
2026-05-28 CDC8737 HGH → SZX May 28, 03:30 UTCMay 28, 03:50 UTC20m
2026-05-24 CDC8206 HRB → HGH May 24, 13:05 UTCMay 24, 13:40 UTC35m
2026-05-24 CDC8787 - May 24, 05:40 UTCMay 24, 05:50 UTC10m
2026-05-24 CDC8737 HGH → SZX May 24, 02:55 UTCMay 24, 03:15 UTC20m
2026-05-22 CDC8206 HRB → HGH May 22, 12:40 UTCMay 22, 13:30 UTC50m
2026-05-22 CDC8787 - May 22, 05:30 UTCMay 22, 05:45 UTC15m
2026-05-22 CDC8737 HGH → SZX May 22, 03:45 UTCMay 22, 04:05 UTC20m
2026-05-19 CDC8859 HGH → CAN May 19, 09:20 UTCMay 19, 09:35 UTC15m
2026-05-18 CDC8206 HRB → HGH May 18, 11:55 UTCMay 18, 12:40 UTC45m
2026-05-18 CDC8787 - May 18, 04:30 UTCMay 18, 04:45 UTC15m
2026-05-18 CDC8737 HGH → SZX May 18, 02:55 UTCMay 18, 03:05 UTC10m
2026-05-11 CDC8738 SZX → HGH May 11, 14:45 UTCMay 11, 14:55 UTC10m
2026-05-11 CDC8788 - May 11, 13:00 UTCMay 11, 13:10 UTC10m
2026-05-10 CDC8859 HGH → CAN May 10, 09:15 UTCMay 10, 09:30 UTC15m
2026-05-08 - - May 8, 16:45 UTCMay 8, 16:55 UTC10m
2026-05-08 CDC8231 HRB → HGH May 8, 04:49 UTCMay 8, 08:49 UTC4h 0m
2026-05-07 CDC8630 - May 7, 09:00 UTCMay 7, 09:10 UTC10m
2026-05-06 CDC8630 - May 6, 09:00 UTCMay 6, 09:10 UTC10m
2026-05-06 CDC8629 - May 6, 07:10 UTCMay 6, 07:20 UTC10m
2026-05-05 CDC8630 - May 5, 09:10 UTCMay 5, 09:20 UTC10m
2026-05-05 CDC8629 - May 5, 07:05 UTCMay 5, 07:25 UTC20m
2026-05-04 CDC8630 - May 4, 09:05 UTCMay 4, 09:15 UTC10m
2026-05-03 CDC8630 - May 3, 10:35 UTCMay 3, 10:45 UTC10m
2026-05-03 CDC8629 - May 3, 07:30 UTCMay 3, 07:55 UTC25m
2026-05-02 CDC8630 - May 2, 09:45 UTCMay 2, 09:55 UTC10m
2026-05-02 CDC8629 - May 2, 07:05 UTCMay 2, 07:30 UTC25m
2026-05-01 CDC8630 - May 1, 09:05 UTCMay 1, 09:15 UTC10m
2026-05-01 CDC8629 - May 1, 06:50 UTCMay 1, 07:05 UTC15m
2026-04-29 CDC8629 - Apr 29, 09:50 UTCApr 29, 10:05 UTC15m
2026-04-27 CDC8629 - Apr 27, 07:00 UTCApr 27, 07:25 UTC25m
2026-04-26 CDC8630 - Apr 26, 08:55 UTCApr 26, 09:10 UTC15m
2026-04-26 CDC8629 - Apr 26, 07:05 UTCApr 26, 07:25 UTC20m
2026-04-25 CDC8629 - Apr 25, 07:10 UTCApr 25, 07:30 UTC20m
2026-04-24 CDC8630 - Apr 24, 12:20 UTCApr 24, 12:30 UTC10m
2026-04-24 CDC8629 - Apr 24, 10:30 UTCApr 24, 10:55 UTC25m
2026-04-23 CDC8630 - Apr 23, 15:00 UTCApr 23, 15:10 UTC10m
2026-04-23 CDC8629 - Apr 23, 11:40 UTCApr 23, 11:55 UTC15m
2026-04-22 CDC8630 - Apr 22, 09:30 UTCApr 22, 09:40 UTC10m
2026-04-22 CDC8629 - Apr 22, 07:55 UTCApr 22, 08:20 UTC25m
2026-04-21 CDC8630 - Apr 21, 09:10 UTCApr 21, 09:25 UTC15m
2026-04-21 CDC8629 - Apr 21, 07:25 UTCApr 21, 07:35 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-323U page for operator, model, and routing details .

Mode-S 781B95 frequently asked

What is Mode-S code 781B95?
781B95 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-323U.
Where is Mode-S 781B95 registered?
Mode-S code 781B95 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B95 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B95, octal 36015625, decimal 7,871,381.
What flights does 781B95 operate?
Mode-S 781B95 has broadcast 14 distinct callsigns, including CDC8629, CDC8630, CDC8787, CDC8737, CDC8859.