Apparatus

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sensors Mode-S transponder

C81B24

ICAO 24-bit transponder address · allocated to New Zealand

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

Hex
C81B24
Octal
62015444
Decimal
13,114,148
Country
NZ
Tail
ZK-NEZ
Type
DH8C
Broadcasting now · callsign ANZ222L · 3,850 ft
Flights observed
271
Distinct callsigns
20
Country
NZ
Last broadcast
1h ago

Current position

C81B24 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C81B24 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
ANZ726L Air New Zealand 6 2026-05-21
ANZ895L Air New Zealand 4 2026-05-26
ANZ886L Air New Zealand 4 2026-05-26
ANZ769L Air New Zealand 4 2026-04-16
ANZ763L Air New Zealand 4 2026-05-04
ANZ739L Air New Zealand 4 2026-05-24
ANZ736L Air New Zealand 4 2026-05-24
ANZ725L Air New Zealand 4 2026-05-21
ANZ325L Air New Zealand 4 2026-05-18
ANZ321L Air New Zealand 4 2026-05-21
ANZ289L Air New Zealand 4 2026-05-20
ANZ167L Air New Zealand 4 2026-05-20
ANZ096L Air New Zealand 4 2026-05-17
ANZ092L Air New Zealand 4 2026-05-26
ANZ091L Air New Zealand 4 2026-05-26
ANZ848L Air New Zealand 3 2026-04-19
ANZ843L Air New Zealand 3 2026-04-19
ANZ837L - 3 2026-04-19
ANZ832L - 3 2026-04-19
ANZ507L Air New Zealand 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ANZ174L GIS → AKL May 30, 02:25 UTCMay 30, 03:00 UTC35m
2026-05-30 ANZ169L AKL → GIS May 30, 00:35 UTCMay 30, 01:20 UTC45m
2026-05-29 ANZ128L TRG → AKL May 29, 21:50 UTCMay 29, 22:25 UTC35m
2026-05-29 ANZ129L AKL → TRG May 29, 20:45 UTCMay 29, 21:10 UTC25m
2026-05-29 ANZ208L BHE → AKL May 29, 18:20 UTCMay 29, 19:20 UTC1h 0m
2026-05-29 ANZ205L AKL → BHE May 29, 06:50 UTCMay 29, 07:55 UTC1h 5m
2026-05-29 ANZ223L - May 29, 05:30 UTCMay 29, 05:45 UTC15m
2026-05-29 ANZ222L - May 29, 04:10 UTCMay 29, 04:30 UTC20m
2026-05-28 ANZ267L KKE → AKL May 28, 22:25 UTCMay 28, 22:55 UTC30m
2026-05-28 ANZ266L AKL → KKE May 28, 21:00 UTCMay 28, 21:25 UTC25m
2026-05-28 ANZ208L BHE → AKL May 28, 19:15 UTCMay 28, 20:15 UTC1h 0m
2026-05-28 ANZ583L AKL → NSN May 28, 05:20 UTCMay 28, 06:15 UTC55m
2026-05-28 ANZ225L - May 28, 00:45 UTCMay 28, 01:05 UTC20m
2026-05-27 ANZ224L - May 27, 23:20 UTCMay 27, 23:35 UTC15m
2026-05-27 ANZ128L TRG → AKL May 27, 22:00 UTCMay 27, 22:20 UTC20m
2026-05-27 ANZ129L AKL → TRG May 27, 20:50 UTCMay 27, 21:15 UTC25m
2026-05-27 ANZ172L GIS → AKL May 27, 06:40 UTCMay 27, 07:30 UTC51m
2026-05-27 ANZ171L AKL → GIS May 27, 04:45 UTCMay 27, 05:29 UTC45m
2026-05-27 ANZ212L BHE → AKL May 27, 02:49 UTCMay 27, 03:45 UTC55m
2026-05-27 ANZ509L AKL → BHE May 27, 00:19 UTCMay 27, 01:24 UTC1h 5m
2026-05-26 ANZ092L TUO → AKL May 26, 22:15 UTCMay 26, 22:44 UTC30m
2026-05-26 ANZ091L AKL → TUO May 26, 20:50 UTCMay 26, 21:20 UTC30m
2026-05-26 ANZ126L TRG → AKL May 26, 19:15 UTCMay 26, 19:40 UTC25m
2026-05-26 ANZ262L WLG → TRG May 26, 07:15 UTCMay 26, 08:10 UTC55m
2026-05-26 ANZ895L NPE → WLG May 26, 05:05 UTCMay 26, 05:49 UTC45m
2026-05-26 ANZ886L WLG → NPE May 26, 03:40 UTCMay 26, 04:24 UTC45m
2026-05-25 ANZ350L CHC → WLG May 25, 23:40 UTCMay 26, 00:24 UTC45m
2026-05-25 ANZ831L - May 25, 22:15 UTCMay 25, 22:34 UTC20m
2026-05-25 ANZ830L - May 25, 20:55 UTCMay 25, 21:09 UTC15m
2026-05-25 ANZ331L WLG → CHC May 25, 18:35 UTCMay 25, 19:30 UTC54m
2026-05-25 ANZ257L TRG → WLG May 25, 06:00 UTCMay 25, 07:20 UTC1h 20m
2026-05-25 ANZ258L WLG → TRG May 25, 04:15 UTCMay 25, 05:15 UTC1h 0m
2026-05-25 ANZ314L NSN → WLG May 25, 02:15 UTCMay 25, 02:25 UTC10m
2026-05-24 ANZ315L WLG → NSN May 24, 20:35 UTCMay 24, 20:40 UTC5m
2026-05-24 ANZ791L NPL → WLG May 24, 19:00 UTCMay 24, 19:50 UTC50m
2026-05-24 ANZ798L WLG → NPL May 24, 07:45 UTCMay 24, 08:30 UTC45m
2026-05-24 ANZ736L BHE → WLG May 24, 07:05 UTCMay 24, 07:10 UTC5m
2026-05-24 ANZ739L WLG → BHE May 24, 05:55 UTCMay 24, 06:05 UTC10m
2026-05-24 ANZ261L TRG → WLG May 24, 03:40 UTCMay 24, 04:50 UTC1h 10m
2026-05-24 ANZ252L WLG → TRG May 24, 01:50 UTCMay 24, 02:50 UTC1h 0m
2026-05-23 ANZ885L NPE → WLG May 23, 22:50 UTCMay 23, 23:35 UTC45m
2026-05-23 ANZ884L WLG → NPE May 23, 21:30 UTCMay 23, 22:10 UTC40m
2026-05-23 ANZ334L CHC → WLG May 23, 19:45 UTCMay 23, 20:35 UTC50m
2026-05-22 ANZ375L WLG → CHC May 22, 05:50 UTCMay 22, 06:45 UTC55m
2026-05-22 ANZ795L NPL → WLG May 22, 04:20 UTCMay 22, 05:05 UTC45m
2026-05-22 ANZ796L WLG → NPL May 22, 03:00 UTCMay 22, 03:40 UTC40m
2026-05-21 ANZ726L BHE → WLG May 21, 20:55 UTCMay 21, 21:00 UTC5m
2026-05-21 ANZ725L WLG → BHE May 21, 19:45 UTCMay 21, 19:50 UTC5m
2026-05-21 ANZ300L NSN → WLG May 21, 18:45 UTCMay 21, 18:55 UTC10m
2026-05-21 ANZ321L WLG → NSN May 21, 06:40 UTCMay 21, 06:45 UTC5m

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-NEZ page for operator, model, and routing details .

Mode-S C81B24 frequently asked

What is Mode-S code C81B24?
C81B24 is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-NEZ.
Where is Mode-S C81B24 registered?
Mode-S code C81B24 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 C81B24 broadcasting right now?
Yes. Mode-S C81B24 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81B24, octal 62015444, decimal 13,114,148.
What flights does C81B24 operate?
Mode-S C81B24 has broadcast 20 distinct callsigns, including ANZ726L, ANZ895L, ANZ886L, ANZ769L, ANZ763L.