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 15h ago
Flights observed
115
Distinct callsigns
20
Country
CN
Last broadcast
15h 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 20 distinct

Callsign Airline Flights Last seen
CDC8630 - 25 2026-07-06
CDC8629 - 23 2026-07-05
CDC8787 - 11 2026-06-20
CDC8737 - 11 2026-06-20
CDC8738 Zhejiang Loong Airlines 7 2026-07-17
CDC8788 - 6 2026-07-17
CDC8206 Zhejiang Loong Airlines 5 2026-06-18
CDC8965 - 4 2026-07-15
CDC8859 Zhejiang Loong Airlines 3 2026-06-01
CDC8285 Zhejiang Loong Airlines 3 2026-05-29
CDC8996 - 2 2026-07-15
CDC8995 - 2 2026-07-13
CDC8231 Zhejiang Loong Airlines 2 2026-06-23
CDC8168 Zhejiang Loong Airlines 2 2026-06-21
CDC8992 - 1 2026-07-16
CDC8966 Zhejiang Loong Airlines 1 2026-04-19
CDC8900 Zhejiang Loong Airlines 1 2026-06-05
CDC8860 Zhejiang Loong Airlines 1 2026-06-01
CDC8628 Zhejiang Loong Airlines 1 2026-06-05
CDC8232 - 1 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CDC8738 SZX → HGH Jul 17, 15:05 UTCJul 17, 15:20 UTC15m
2026-07-17 CDC8788 - Jul 17, 12:45 UTCJul 17, 13:15 UTC30m
2026-07-16 CDC8992 - Jul 16, 02:55 UTCJul 16, 07:30 UTC4h 35m
2026-07-15 CDC8996 - Jul 15, 14:35 UTCJul 15, 14:45 UTC10m
2026-07-15 CDC8965 - Jul 15, 05:35 UTCJul 15, 05:45 UTC10m
2026-07-13 CDC8996 - Jul 13, 15:55 UTCJul 13, 16:05 UTC10m
2026-07-13 CDC8995 - Jul 13, 12:40 UTCJul 13, 12:50 UTC10m
2026-07-10 CDC8995 - Jul 10, 12:10 UTCJul 10, 13:00 UTC50m
2026-07-10 CDC8965 - Jul 10, 04:00 UTCJul 10, 04:40 UTC40m
2026-07-09 CDC8738 - Jul 9, 17:25 UTCJul 9, 17:35 UTC10m
2026-07-09 CDC8788 - Jul 9, 15:35 UTCJul 9, 15:45 UTC10m
2026-07-08 CDC8738 - Jul 8, 17:55 UTCJul 8, 18:05 UTC10m
2026-07-08 CDC8788 - Jul 8, 16:05 UTCJul 8, 16:30 UTC25m
2026-07-06 CDC8232 - Jul 6, 23:40 UTCJul 7, 09:40 UTC10h 0m
2026-07-06 CDC8630 - Jul 6, 10:25 UTCJul 6, 10:40 UTC15m
2026-07-05 CDC8630 - Jul 5, 11:55 UTCJul 5, 12:05 UTC10m
2026-07-05 CDC8629 - Jul 5, 09:05 UTCJul 5, 09:35 UTC30m
2026-07-04 CDC8630 - Jul 4, 13:15 UTCJul 4, 13:25 UTC10m
2026-07-04 CDC8629 - Jul 4, 10:40 UTCJul 4, 11:00 UTC20m
2026-07-03 CDC8630 - Jul 3, 11:45 UTCJul 3, 12:00 UTC15m
2026-07-03 CDC8629 - Jul 3, 09:55 UTCJul 3, 10:15 UTC20m
2026-07-02 CDC8630 - Jul 2, 11:05 UTCJul 2, 11:20 UTC15m
2026-07-02 CDC8629 - Jul 2, 09:30 UTCJul 2, 09:40 UTC10m
2026-07-01 CDC8630 - Jul 1, 10:40 UTCJul 1, 10:55 UTC15m
2026-07-01 CDC8629 - Jul 1, 08:05 UTCJul 1, 08:15 UTC10m
2026-06-30 CDC8630 - Jun 30, 11:00 UTCJun 30, 11:10 UTC10m
2026-06-30 CDC8629 - Jun 30, 09:00 UTCJun 30, 09:15 UTC15m
2026-06-29 CDC8630 - Jun 29, 10:00 UTCJun 29, 10:10 UTC10m
2026-06-28 CDC8630 - Jun 28, 16:55 UTCJun 28, 17:04 UTC10m
2026-06-28 CDC8630 - Jun 28, 12:55 UTCJun 28, 13:04 UTC10m
2026-06-27 CDC8630 - Jun 27, 09:00 UTCJun 27, 09:15 UTC15m
2026-06-27 CDC8629 - Jun 27, 06:44 UTCJun 27, 06:59 UTC15m
2026-06-26 CDC8630 - Jun 26, 11:34 UTCJun 26, 11:45 UTC10m
2026-06-26 CDC8629 - Jun 26, 09:50 UTCJun 26, 10:10 UTC20m
2026-06-24 CDC8629 - Jun 24, 07:59 UTCJun 24, 08:09 UTC10m
2026-06-23 CDC8231 HRB → HGH Jun 23, 04:50 UTCJun 23, 08:39 UTC3h 50m
2026-06-22 CDC8738 - Jun 22, 16:05 UTCJun 22, 16:14 UTC10m
2026-06-21 CDC8168 HRB → HGH Jun 21, 06:55 UTCJun 21, 16:39 UTC9h 45m
2026-06-20 CDC8168 HRB → HGH Jun 20, 12:34 UTCJun 21, 07:40 UTC19h 5m
2026-06-20 CDC8787 - Jun 20, 04:34 UTCJun 20, 04:44 UTC10m
2026-06-20 CDC8737 - Jun 20, 02:40 UTCJun 20, 02:54 UTC15m
2026-06-19 CDC8738 - Jun 19, 16:09 UTCJun 19, 16:19 UTC10m
2026-06-19 CDC8788 - Jun 19, 13:29 UTCJun 19, 13:50 UTC20m
2026-06-18 CDC8206 HRB → HGH Jun 18, 12:00 UTCJun 18, 17:30 UTC5h 30m
2026-06-18 CDC8787 - Jun 18, 08:05 UTCJun 18, 08:20 UTC15m
2026-06-18 CDC8737 - Jun 18, 06:10 UTCJun 18, 06:30 UTC20m
2026-06-08 CDC8787 - Jun 8, 04:30 UTCJun 8, 04:40 UTC10m
2026-06-08 CDC8737 HGH → SZX Jun 8, 02:35 UTCJun 8, 02:55 UTC20m
2026-06-05 CDC8628 SZX → HGH Jun 5, 17:15 UTCJun 5, 17:25 UTC10m
2026-06-05 CDC8900 HGH → SZX Jun 5, 15:35 UTCJun 5, 15:55 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-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 15h 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 20 distinct callsigns, including CDC8630, CDC8629, CDC8787, CDC8737, CDC8738.