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sensors Mode-S transponder

C819DF

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-NEO · DE HAVILLAND DHC-8-300 Dash 8

Hex
C819DF
Octal
62014737
Decimal
13,113,823
Country
NZ
Tail
ZK-NEO
Type
DH8C
No current signal · last broadcast Jul 26, 08:50 UTC
Flights observed
495
Distinct callsigns
20
Country
NZ
Last broadcast
Jul 26, 08:50 UTC

Last known position

Most recent position reported by Mode-S C819DF.

Country allocation

The ICAO 24-bit address C819DF falls within the block assigned to New Zealand (NZ) by ICAO Annex 10, Volume III. Every aircraft registered in New Zealand 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
ANZ300L - 9 2026-07-08
ANZ726L - 8 2026-06-30
ANZ725L - 8 2026-06-30
ANZ885L - 7 2026-07-12
ANZ884L - 7 2026-07-12
ANZ792L - 7 2026-07-01
ANZ193L - 7 2026-06-28
ANZ192L - 7 2026-06-28
ANZ793L - 6 2026-07-01
ANZ769L - 6 2026-07-14
ANZ317L - 6 2026-07-12
ANZ277L Air New Zealand 6 2026-07-23
ANZ270L Air New Zealand 6 2026-07-23
ANZ258L Air New Zealand 6 2026-07-26
ANZ257L Air New Zealand 6 2026-07-26
ANZ208L - 6 2026-07-21
ANZ205L Air New Zealand 6 2026-07-21
ANZ190L - 6 2026-07-22
ANZ161L Air New Zealand 6 2026-07-24
ANZ854L - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ANZ325L WLG → NSN Jul 26, 08:20 UTCJul 26, 08:50 UTC30m
2026-07-26 ANZ257L TRG → WLG Jul 26, 06:10 UTCJul 26, 07:15 UTC1h 6m
2026-07-26 ANZ258L WLG → TRG Jul 26, 04:30 UTCJul 26, 05:30 UTC1h 0m
2026-07-26 ANZ312L NSN → WLG Jul 26, 03:10 UTCJul 26, 03:35 UTC25m
2026-07-26 ANZ309L WLG → NSN Jul 26, 02:00 UTCJul 26, 02:25 UTC25m
2026-07-24 ANZ255L TRG → WLG Jul 24, 23:20 UTCJul 25, 00:25 UTC1h 5m
2026-07-24 ANZ264L WLG → TRG Jul 24, 21:05 UTCJul 24, 22:15 UTC1h 10m
2026-07-24 ANZ507L GIS → WLG Jul 24, 18:45 UTCJul 24, 19:40 UTC55m
2026-07-24 ANZ161L AKL → GIS Jul 24, 07:55 UTCJul 24, 08:35 UTC40m
2026-07-24 ANZ096L TUO → AKL Jul 24, 06:20 UTCJul 24, 07:05 UTC45m
2026-07-24 ANZ095L AKL → TUO Jul 24, 05:05 UTCJul 24, 05:35 UTC30m
2026-07-24 ANZ076L NSN → AKL Jul 24, 02:55 UTCJul 24, 04:15 UTC1h 20m
2026-07-24 ANZ089L AKL → NSN Jul 24, 00:45 UTCJul 24, 01:50 UTC1h 5m
2026-07-23 ANZ088L NSN → AKL Jul 23, 22:45 UTCJul 24, 00:00 UTC1h 15m
2026-07-23 ANZ087L AKL → NSN Jul 23, 08:35 UTCJul 23, 09:45 UTC1h 10m
2026-07-23 ANZ277L KKE → AKL Jul 23, 06:50 UTCJul 23, 07:25 UTC35m
2026-07-23 ANZ270L AKL → KKE Jul 23, 05:30 UTCJul 23, 05:55 UTC25m
2026-07-22 ANZ088L NSN → AKL Jul 22, 23:40 UTCJul 23, 00:55 UTC1h 15m
2026-07-22 ANZ305L - Jul 22, 21:35 UTCJul 22, 22:05 UTC30m
2026-07-22 ANZ190L - Jul 22, 19:05 UTCJul 22, 20:00 UTC55m
2026-07-22 ANZ524L NSN → WLG Jul 22, 04:25 UTCJul 22, 04:50 UTC25m
2026-07-22 ANZ089L AKL → NSN Jul 22, 00:30 UTCJul 22, 01:40 UTC1h 10m
2026-07-21 ANZ092L TUO → AKL Jul 21, 22:05 UTCJul 21, 22:45 UTC40m
2026-07-21 ANZ091L - Jul 21, 20:45 UTCJul 21, 21:20 UTC35m
2026-07-21 ANZ208L - Jul 21, 18:15 UTCJul 21, 19:25 UTC1h 10m
2026-07-21 ANZ205L AKL → BHE Jul 21, 06:55 UTCJul 21, 08:15 UTC1h 20m
2026-07-20 ANZ146L - Jul 20, 01:15 UTCJul 20, 01:35 UTC20m
2026-07-19 ANZ146L - Jul 19, 22:25 UTCJul 19, 23:00 UTC35m
2026-07-19 ANZ127L - Jul 19, 21:05 UTCJul 19, 21:25 UTC20m
2026-07-19 ANZ229L - Jul 19, 18:00 UTCJul 19, 18:25 UTC25m
2026-07-19 ANZ226L - Jul 19, 08:30 UTCJul 19, 08:55 UTC25m
2026-07-19 ANZ096L - Jul 19, 06:20 UTCJul 19, 06:50 UTC30m
2026-07-19 ANZ095L - Jul 19, 05:05 UTCJul 19, 05:35 UTC30m
2026-07-19 ANZ269L KKE → AKL Jul 19, 03:25 UTCJul 19, 03:50 UTC25m
2026-07-19 ANZ268L AKL → KKE Jul 19, 02:05 UTCJul 19, 02:30 UTC25m
2026-07-19 ANZ225L - Jul 19, 00:45 UTCJul 19, 01:15 UTC30m
2026-07-18 ANZ224L AKL → WRE Jul 18, 23:40 UTCJul 19, 00:05 UTC25m
2026-07-18 ANZ128L - Jul 18, 21:55 UTCJul 18, 22:20 UTC25m
2026-07-18 ANZ129L - Jul 18, 20:40 UTCJul 18, 21:10 UTC30m
2026-07-17 ANZ208L BHE → AKL Jul 17, 18:05 UTCJul 17, 19:20 UTC1h 15m
2026-07-17 ANZ205L - Jul 17, 06:50 UTCJul 17, 08:04 UTC1h 15m
2026-07-17 ANZ076L - Jul 17, 02:59 UTCJul 17, 04:04 UTC1h 5m
2026-07-17 ANZ089L - Jul 17, 00:40 UTCJul 17, 01:49 UTC1h 10m
2026-07-16 ANZ164L - Jul 16, 22:49 UTCJul 16, 23:35 UTC45m
2026-07-16 ANZ163L - Jul 16, 21:10 UTCJul 16, 21:55 UTC45m
2026-07-16 ANZ208L - Jul 16, 18:10 UTCJul 16, 19:20 UTC1h 10m
2026-07-16 ANZ205L - Jul 16, 06:55 UTCJul 16, 08:15 UTC1h 20m
2026-07-16 ANZ221L - Jul 16, 00:05 UTCJul 16, 00:30 UTC25m
2026-07-15 ANZ220L - Jul 15, 23:05 UTCJul 15, 23:30 UTC25m
2026-07-15 ANZ229L - Jul 15, 21:50 UTCJul 15, 22:15 UTC25m

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 ZK-NEO page for operator, model, and routing details .

Mode-S C819DF frequently asked

What is Mode-S code C819DF?
C819DF is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-NEO.
Where is Mode-S C819DF registered?
Mode-S code C819DF is allocated to New Zealand (NZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C819DF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 08:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C819DF, octal 62014737, decimal 13,113,823.
What flights does C819DF operate?
Mode-S C819DF has broadcast 20 distinct callsigns, including ANZ300L, ANZ726L, ANZ725L, ANZ885L, ANZ884L.