Apparatus

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sensors Mode-S transponder

C81E2C

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-OJS · AIRBUS A-320

Hex
C81E2C
Octal
62017054
Decimal
13,114,924
Country
NZ
Tail
ZK-OJS
Type
A320
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
592
Distinct callsigns
20
Country
NZ
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S C81E2C.

Country allocation

The ICAO 24-bit address C81E2C 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
ANZ441 Air New Zealand 14 2026-07-21
ANZ542 Air New Zealand 12 2026-07-21
ANZ448 - 12 2026-07-19
ANZ659 Air New Zealand 10 2026-07-20
ANZ644 Air New Zealand 10 2026-07-20
ANZ626 - 10 2026-07-12
ANZ623 - 10 2026-07-12
ANZ582 - 10 2026-07-17
ANZ410 Air New Zealand 10 2026-07-18
ANZ405 Air New Zealand 10 2026-07-23
ANZ327 Air New Zealand 10 2026-07-20
ANZ461 - 9 2026-07-05
ANZ457 Air New Zealand 9 2026-07-20
ANZ686 - 8 2026-07-14
ANZ681 - 8 2026-07-14
ANZ605 Air New Zealand 8 2026-07-26
ANZ567 Air New Zealand 8 2026-07-26
ANZ558 - 8 2026-06-30
ANZ547 - 8 2026-06-30
ANZ428 - 8 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ANZ605 WLG → ZQN Jul 26, 21:25 UTCJul 26, 22:30 UTC1h 5m
2026-07-26 ANZ407 AKL → WLG Jul 26, 19:35 UTCJul 26, 20:25 UTC50m
2026-07-26 ANZ588 CHC → AKL Jul 26, 09:50 UTCJul 26, 10:50 UTC1h 0m
2026-07-26 ANZ567 AKL → CHC Jul 26, 07:45 UTCJul 26, 08:55 UTC1h 10m
2026-07-26 ANZ578 CHC → AKL Jul 26, 05:25 UTCJul 26, 06:30 UTC1h 5m
2026-07-26 ANZ551 AKL → CHC Jul 26, 03:15 UTCJul 26, 04:25 UTC1h 10m
2026-07-25 ANZ612 ZQN → AKL Jul 25, 22:50 UTCJul 26, 00:10 UTC1h 20m
2026-07-25 ANZ613 AKL → ZQN Jul 25, 20:10 UTCJul 25, 21:40 UTC1h 30m
2026-07-25 ANZ620 ZQN → AKL Jul 25, 01:15 UTCJul 25, 02:40 UTC1h 25m
2026-07-24 ANZ617 AKL → ZQN Jul 24, 22:35 UTCJul 24, 23:50 UTC1h 15m
2026-07-24 ANZ588 CHC → AKL Jul 24, 09:30 UTCJul 24, 10:40 UTC1h 10m
2026-07-24 ANZ567 AKL → CHC Jul 24, 07:35 UTCJul 24, 08:35 UTC1h 0m
2026-07-24 ANZ468 WLG → AKL Jul 24, 05:40 UTCJul 24, 06:35 UTC55m
2026-07-24 ANZ481 AKL → WLG Jul 24, 03:45 UTCJul 24, 04:40 UTC55m
2026-07-24 ANZ546 CHC → AKL Jul 24, 01:25 UTCJul 24, 02:30 UTC1h 5m
2026-07-23 ANZ535 AKL → CHC Jul 23, 23:15 UTCJul 24, 00:25 UTC1h 10m
2026-07-23 ANZ412 WLG → AKL Jul 23, 21:10 UTCJul 23, 22:00 UTC50m
2026-07-23 ANZ405 AKL → WLG Jul 23, 19:15 UTCJul 23, 20:00 UTC45m
2026-07-23 ANZ674 DUD → AKL Jul 23, 07:50 UTCJul 23, 09:25 UTC1h 35m
2026-07-23 ANZ677 AKL → DUD Jul 23, 05:25 UTCJul 23, 07:00 UTC1h 35m
2026-07-23 ANZ436 WLG → AKL Jul 23, 03:25 UTCJul 23, 04:10 UTC45m
2026-07-23 ANZ429 AKL → WLG Jul 23, 01:20 UTCJul 23, 02:10 UTC50m
2026-07-22 ANZ676 DUD → AKL Jul 22, 22:30 UTCJul 23, 00:15 UTC1h 45m
2026-07-22 ANZ673 AKL → DUD Jul 22, 20:10 UTCJul 22, 21:40 UTC1h 30m
2026-07-22 ANZ616 ZQN → AKL Jul 22, 00:20 UTCJul 22, 01:40 UTC1h 20m
2026-07-21 ANZ635 AKL → ZQN Jul 21, 21:35 UTCJul 21, 23:15 UTC1h 40m
2026-07-21 ANZ476 WLG → AKL Jul 21, 19:15 UTCJul 21, 20:00 UTC45m
2026-07-21 ANZ384 CHC → WLG Jul 21, 08:20 UTCJul 21, 08:50 UTC30m
2026-07-21 ANZ377 WLG → CHC Jul 21, 06:20 UTCJul 21, 07:00 UTC40m
2026-07-21 ANZ441 AKL → WLG Jul 21, 04:15 UTCJul 21, 05:05 UTC50m
2026-07-21 ANZ542 CHC → AKL Jul 21, 00:15 UTCJul 21, 01:15 UTC1h 0m
2026-07-20 ANZ644 ZQN → AKL Jul 20, 22:50 UTCJul 20, 23:25 UTC35m
2026-07-20 ANZ659 CHC → ZQN Jul 20, 21:10 UTCJul 20, 21:50 UTC40m
2026-07-20 ANZ327 WLG → CHC Jul 20, 19:05 UTCJul 20, 19:40 UTC35m
2026-07-20 ANZ457 AKL → WLG Jul 20, 08:25 UTCJul 20, 09:05 UTC40m
2026-07-20 ANZ566 CHC → AKL Jul 20, 06:20 UTCJul 20, 07:15 UTC55m
2026-07-20 ANZ555 AKL → CHC Jul 20, 04:20 UTCJul 20, 05:30 UTC1h 10m
2026-07-20 ANZ550 CHC → AKL Jul 20, 02:15 UTCJul 20, 03:10 UTC55m
2026-07-19 ANZ535 - Jul 19, 23:50 UTCJul 20, 00:55 UTC1h 5m
2026-07-19 ANZ412 - Jul 19, 21:40 UTCJul 19, 22:30 UTC50m
2026-07-19 ANZ405 - Jul 19, 19:30 UTCJul 19, 20:15 UTC45m
2026-07-19 ANZ458 WLG → AKL Jul 19, 10:15 UTCJul 19, 11:00 UTC45m
2026-07-19 ANZ455 WLG → CHC Jul 19, 08:30 UTCJul 19, 09:15 UTC45m
2026-07-19 ANZ448 - Jul 19, 06:25 UTCJul 19, 07:15 UTC50m
2026-07-19 ANZ441 - Jul 19, 04:15 UTCJul 19, 05:05 UTC50m
2026-07-19 ANZ698 - Jul 19, 01:10 UTCJul 19, 02:40 UTC1h 30m
2026-07-18 ANZ699 - Jul 18, 22:30 UTCJul 19, 00:10 UTC1h 40m
2026-07-18 ANZ410 WLG → AKL Jul 18, 20:00 UTCJul 18, 20:45 UTC45m
2026-07-18 ANZ455 WLG → CHC Jul 18, 07:45 UTCJul 18, 08:30 UTC45m
2026-07-18 ANZ468 - Jul 18, 05:05 UTCJul 18, 05:45 UTC40m

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

Mode-S C81E2C frequently asked

What is Mode-S code C81E2C?
C81E2C is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-OJS.
Where is Mode-S C81E2C registered?
Mode-S code C81E2C 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 C81E2C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81E2C, octal 62017054, decimal 13,114,924.
What flights does C81E2C operate?
Mode-S C81E2C has broadcast 20 distinct callsigns, including ANZ441, ANZ542, ANZ448, ANZ659, ANZ644.