Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C81C9F

ICAO 24-bit transponder address · allocated to New Zealand

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

Hex
C81C9F
Octal
62016237
Decimal
13,114,527
Country
NZ
Tail
ZK-NFI
Type
DH8C
No current signal · last broadcast 1h ago
Flights observed
427
Distinct callsigns
20
Country
NZ
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C81C9F.

Country allocation

The ICAO 24-bit address C81C9F 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
ANZ843L - 8 2026-07-03
ANZ251L - 7 2026-07-05
ANZ336L Air New Zealand 6 2026-06-29
ANZ264L - 6 2026-07-05
ANZ262L - 6 2026-07-05
ANZ193L - 6 2026-06-29
ANZ192L - 6 2026-06-30
ANZ837L - 5 2026-07-03
ANZ832L - 5 2026-07-03
ANZ375L - 5 2026-07-09
ANZ317L - 5 2026-07-14
ANZ304L - 5 2026-07-13
ANZ282L - 5 2026-07-09
ANZ255L - 5 2026-07-05
ANZ222L - 5 2026-06-14
ANZ166L - 5 2026-07-09
ANZ143L - 5 2026-06-14
ANZ138L - 5 2026-07-02
ANZ137L - 5 2026-07-02
ANZ126L Air New Zealand 5 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ANZ317L - Jul 14, 05:35 UTCJul 14, 05:45 UTC10m
2026-07-14 ANZ730L - Jul 14, 01:35 UTCJul 14, 01:50 UTC15m
2026-07-14 ANZ729L WLG → BHE Jul 14, 00:40 UTCJul 14, 01:00 UTC20m
2026-07-13 ANZ315L WLG → WLG Jul 13, 20:55 UTCJul 13, 21:50 UTC55m
2026-07-13 ANZ791L NPL → WLG Jul 13, 19:05 UTCJul 13, 19:55 UTC50m
2026-07-13 ANZ798L WLG → NPL Jul 13, 07:40 UTCJul 13, 08:25 UTC45m
2026-07-13 ANZ304L - Jul 13, 06:05 UTCJul 13, 06:25 UTC20m
2026-07-13 ANZ073L - Jul 13, 02:45 UTCJul 13, 03:30 UTC45m
2026-07-12 ANZ060L - Jul 12, 21:25 UTCJul 12, 22:05 UTC40m
2026-07-12 ANZ063L - Jul 12, 18:55 UTCJul 12, 19:50 UTC55m
2026-07-12 ANZ082L - Jul 12, 05:50 UTCJul 12, 06:40 UTC50m
2026-07-12 ANZ079L - Jul 12, 03:25 UTCJul 12, 04:15 UTC50m
2026-07-12 ANZ225L - Jul 12, 00:40 UTCJul 12, 01:00 UTC20m
2026-07-11 ANZ224L - Jul 11, 23:15 UTCJul 11, 23:45 UTC30m
2026-07-11 ANZ128L - Jul 11, 22:01 UTCJul 11, 22:25 UTC25m
2026-07-11 ANZ129L - Jul 11, 20:55 UTCJul 11, 21:20 UTC25m
2026-07-11 ANZ122L - Jul 11, 06:05 UTCJul 11, 06:55 UTC50m
2026-07-11 ANZ117L - Jul 11, 04:30 UTCJul 11, 05:25 UTC55m
2026-07-09 ANZ166L - Jul 9, 23:45 UTCJul 10, 00:35 UTC50m
2026-07-09 ANZ282L - Jul 9, 21:55 UTCJul 9, 22:50 UTC55m
2026-07-09 ANZ334L - Jul 9, 20:00 UTCJul 9, 20:55 UTC55m
2026-07-09 ANZ375L - Jul 9, 06:15 UTCJul 9, 07:00 UTC45m
2026-07-09 ANZ289L - Jul 9, 03:35 UTCJul 9, 04:35 UTC1h 0m
2026-07-09 ANZ167L - Jul 9, 01:50 UTCJul 9, 02:40 UTC50m
2026-07-08 ANZ092L - Jul 8, 22:25 UTCJul 8, 23:00 UTC35m
2026-07-08 ANZ091L - Jul 8, 21:00 UTCJul 8, 21:35 UTC35m
2026-07-08 ANZ066L - Jul 8, 04:55 UTCJul 8, 05:45 UTC50m
2026-07-08 ANZ073L - Jul 8, 02:15 UTCJul 8, 03:05 UTC50m
2026-07-08 ANZ273L - Jul 8, 01:05 UTCJul 8, 01:30 UTC25m
2026-07-07 ANZ276L - Jul 7, 23:40 UTCJul 8, 00:00 UTC20m
2026-07-07 ANZ128L - Jul 7, 22:05 UTCJul 7, 22:25 UTC20m
2026-07-07 ANZ129L - Jul 7, 20:50 UTCJul 7, 21:15 UTC25m
2026-07-07 ANZ160L GIS → AKL Jul 7, 18:25 UTCJul 7, 19:10 UTC45m
2026-07-07 ANZ161L - Jul 7, 07:35 UTCJul 7, 08:20 UTC45m
2026-07-06 ANZ166L - Jul 6, 23:45 UTCJul 7, 00:40 UTC55m
2026-07-06 ANZ282L - Jul 6, 21:30 UTCJul 6, 22:35 UTC1h 5m
2026-07-06 ANZ302L NSN → WLG Jul 6, 20:10 UTCJul 6, 20:35 UTC25m
2026-07-06 ANZ967L BHE → CHC Jul 6, 04:55 UTCJul 6, 05:20 UTC25m
2026-07-05 ANZ255L - Jul 5, 23:50 UTCJul 6, 01:30 UTC1h 40m
2026-07-05 ANZ264L WLG → TRG Jul 5, 21:45 UTCJul 5, 23:05 UTC1h 20m
2026-07-05 ANZ251L - Jul 5, 19:25 UTCJul 5, 20:40 UTC1h 15m
2026-07-05 ANZ262L - Jul 5, 07:10 UTCJul 5, 08:15 UTC1h 5m
2026-07-05 ANZ895L NPE → WLG Jul 5, 04:50 UTCJul 5, 05:35 UTC45m
2026-07-05 ANZ886L WLG → NPE Jul 5, 03:20 UTCJul 5, 04:05 UTC45m
2026-07-05 ANZ889L NPE → WLG Jul 5, 01:05 UTCJul 5, 01:55 UTC50m
2026-07-04 ANZ882L WLG → NPE Jul 4, 23:35 UTCJul 5, 00:20 UTC45m
2026-07-04 ANZ318L - Jul 4, 21:55 UTCJul 4, 22:10 UTC15m
2026-07-03 ANZ854L - Jul 3, 07:20 UTCJul 3, 07:35 UTC15m
2026-07-03 ANZ837L - Jul 3, 06:05 UTCJul 3, 06:25 UTC20m
2026-07-03 ANZ832L - Jul 3, 04:40 UTCJul 3, 04:50 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 ZK-NFI page for operator, model, and routing details .

Mode-S C81C9F frequently asked

What is Mode-S code C81C9F?
C81C9F is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-NFI.
Where is Mode-S C81C9F registered?
Mode-S code C81C9F 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 C81C9F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81C9F, octal 62016237, decimal 13,114,527.
What flights does C81C9F operate?
Mode-S C81C9F has broadcast 20 distinct callsigns, including ANZ843L, ANZ251L, ANZ336L, ANZ264L, ANZ262L.