Apparatus

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sensors Mode-S transponder

781CB8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-327C · AIRBUS A-321neo

Hex
781CB8
Octal
36016270
Decimal
7,871,672
Country
CN
Tail
B-327C
Type
A21N
No current signal · last broadcast Jul 26, 17:25 UTC
Flights observed
221
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 17:25 UTC

Last known position

Most recent position reported by Mode-S 781CB8.

Country allocation

The ICAO 24-bit address 781CB8 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
CDC8231 Zhejiang Loong Airlines 64 2026-07-05
CDC8628 Zhejiang Loong Airlines 18 2026-07-26
CDC8627 Zhejiang Loong Airlines 18 2026-07-22
CDC8232 - 17 2026-07-03
CDC8899 Zhejiang Loong Airlines 16 2026-07-23
CDC8199 Zhejiang Loong Airlines 14 2026-07-23
CDC8900 Zhejiang Loong Airlines 13 2026-07-26
CDC8965 - 11 2026-07-02
CDC8888 Zhejiang Loong Airlines 11 2026-07-24
CDC8966 - 9 2026-07-02
CDC8988 Zhejiang Loong Airlines 7 2026-07-24
CDC8995 Zhejiang Loong Airlines 6 2026-06-21
CDC8200 - 6 2026-06-29
CDC8629 - 3 2026-06-18
CDC8630 - 2 2026-06-18
CDC8987 Zhejiang Loong Airlines 1 2026-07-24
CDC862Q - 1 2026-07-08
CDC8206 - 1 2026-07-08
CDC8008 Zhejiang Loong Airlines 1 2026-07-25
CDC8007 Zhejiang Loong Airlines 1 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CDC8628 SZX → HGH Jul 26, 17:10 UTCJul 26, 17:25 UTC15m
2026-07-26 CDC8900 HGH → SZX Jul 26, 13:50 UTCJul 26, 14:35 UTC45m
2026-07-25 CDC8008 HKG → HGH Jul 25, 06:15 UTCJul 25, 07:25 UTC1h 10m
2026-07-25 CDC8007 HGH → HKG Jul 25, 03:40 UTCJul 25, 04:15 UTC35m
2026-07-24 CDC8988 PEK → HGH Jul 24, 12:00 UTCJul 24, 12:10 UTC10m
2026-07-24 CDC8987 HGH → PEK Jul 24, 09:35 UTCJul 24, 09:55 UTC20m
2026-07-24 CDC8888 PEK → HGH Jul 24, 02:55 UTCJul 24, 03:05 UTC10m
2026-07-23 CDC8628 SZX → HGH Jul 23, 16:25 UTCJul 23, 16:35 UTC10m
2026-07-23 CDC8900 HGH → SZX Jul 23, 14:35 UTCJul 23, 15:00 UTC25m
2026-07-23 CDC8199 HGH → SYX Jul 23, 06:05 UTCJul 23, 13:55 UTC7h 50m
2026-07-23 CDC8899 SZX → HGH Jul 23, 01:35 UTCJul 23, 01:45 UTC10m
2026-07-22 CDC8627 HGH → SZX Jul 22, 23:10 UTCJul 22, 23:50 UTC40m
2026-07-22 CDC8628 SZX → HGH Jul 22, 16:40 UTCJul 22, 16:50 UTC10m
2026-07-22 CDC8900 HGH → SZX Jul 22, 14:40 UTCJul 22, 15:25 UTC45m
2026-07-22 CDC8899 SZX → HGH Jul 22, 01:15 UTCJul 22, 01:25 UTC10m
2026-07-21 CDC8627 HGH → SZX Jul 21, 18:45 UTCJul 21, 23:50 UTC5h 5m
2026-07-21 CDC8900 HGH → SZX Jul 21, 07:20 UTCJul 21, 17:15 UTC9h 55m
2026-07-21 CDC8899 SZX → HGH Jul 21, 02:50 UTCJul 21, 03:00 UTC10m
2026-07-20 CDC8627 HGH → SZX Jul 20, 23:05 UTCJul 20, 23:45 UTC40m
2026-07-20 CDC8888 PEK → HGH Jul 20, 03:00 UTCJul 20, 03:15 UTC15m
2026-07-19 CDC8628 SZX → HGH Jul 19, 17:35 UTCJul 19, 17:50 UTC15m
2026-07-19 CDC8900 HGH → SZX Jul 19, 05:50 UTCJul 19, 15:55 UTC10h 5m
2026-07-19 CDC8899 - Jul 19, 01:15 UTCJul 19, 01:25 UTC10m
2026-07-18 CDC8627 HGH → SZX Jul 18, 23:10 UTCJul 18, 23:50 UTC40m
2026-07-18 CDC8628 SZX → HGH Jul 18, 17:25 UTCJul 18, 17:40 UTC15m
2026-07-18 CDC8900 HGH → SZX Jul 18, 06:00 UTCJul 18, 15:55 UTC9h 55m
2026-07-18 CDC8899 - Jul 18, 01:15 UTCJul 18, 01:25 UTC10m
2026-07-17 CDC8627 HGH → SZX Jul 17, 23:10 UTCJul 17, 23:55 UTC45m
2026-07-17 CDC8628 SZX → HGH Jul 17, 17:55 UTCJul 17, 18:05 UTC10m
2026-07-17 CDC8900 HGH → SZX Jul 17, 07:05 UTCJul 17, 16:10 UTC9h 5m
2026-07-16 CDC8627 - Jul 16, 23:15 UTCJul 16, 23:49 UTC35m
2026-07-16 CDC8888 - Jul 16, 03:00 UTCJul 16, 03:10 UTC10m
2026-07-15 CDC8628 - Jul 15, 16:10 UTCJul 15, 16:25 UTC15m
2026-07-15 CDC8900 - Jul 15, 02:00 UTCJul 15, 14:55 UTC12h 55m
2026-07-14 CDC8627 - Jul 14, 23:10 UTCJul 14, 23:50 UTC40m
2026-07-14 CDC8628 - Jul 14, 16:00 UTCJul 14, 16:10 UTC10m
2026-07-14 CDC8199 - Jul 14, 05:40 UTCJul 14, 14:30 UTC8h 50m
2026-07-14 CDC8899 - Jul 14, 01:15 UTCJul 14, 01:25 UTC10m
2026-07-13 CDC8627 - Jul 13, 23:10 UTCJul 13, 23:50 UTC40m
2026-07-13 CDC8628 - Jul 13, 15:55 UTCJul 13, 16:05 UTC10m
2026-07-13 CDC8199 - Jul 13, 05:40 UTCJul 13, 13:50 UTC8h 10m
2026-07-13 CDC8899 - Jul 13, 01:25 UTCJul 13, 01:35 UTC10m
2026-07-12 CDC8627 - Jul 12, 23:00 UTCJul 12, 23:45 UTC45m
2026-07-12 CDC8628 - Jul 12, 16:20 UTCJul 12, 16:30 UTC10m
2026-07-12 CDC8900 - Jul 12, 13:45 UTCJul 12, 14:25 UTC40m
2026-07-12 CDC8899 - Jul 12, 07:10 UTCJul 12, 07:20 UTC10m
2026-07-11 CDC8199 - Jul 11, 06:10 UTCJul 11, 09:45 UTC3h 35m
2026-07-11 CDC8899 - Jul 11, 01:45 UTCJul 11, 01:55 UTC10m
2026-07-10 CDC8627 - Jul 10, 23:10 UTCJul 10, 23:50 UTC40m
2026-07-10 CDC8988 - Jul 10, 13:30 UTCJul 10, 13:45 UTC15m

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-327C page for operator, model, and routing details .

Mode-S 781CB8 frequently asked

What is Mode-S code 781CB8?
781CB8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-327C.
Where is Mode-S 781CB8 registered?
Mode-S code 781CB8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781CB8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781CB8, octal 36016270, decimal 7,871,672.
What flights does 781CB8 operate?
Mode-S 781CB8 has broadcast 20 distinct callsigns, including CDC8231, CDC8628, CDC8627, CDC8232, CDC8899.