Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C81D9D

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-OJQ · AIRBUS A-320

Hex
C81D9D
Octal
62016635
Decimal
13,114,781
Country
NZ
Tail
ZK-OJQ
Type
A320
No current signal · last broadcast 8h ago
Flights observed
259
Distinct callsigns
20
Country
NZ
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S C81D9D.

Country allocation

The ICAO 24-bit address C81D9D 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
ANZ538 Air New Zealand 6 2026-05-28
ANZ676 Air New Zealand 5 2026-05-20
ANZ673 Air New Zealand 5 2026-05-20
ANZ612 Air New Zealand 5 2026-05-19
ANZ584 Air New Zealand 5 2026-05-25
ANZ573 Air New Zealand 5 2026-05-26
ANZ527 Air New Zealand 5 2026-05-21
ANZ466 Air New Zealand 5 2026-05-26
ANZ429 Air New Zealand 5 2026-05-22
ANZ623 Air New Zealand 4 2026-05-23
ANZ613 Air New Zealand 4 2026-05-19
ANZ563 Air New Zealand 4 2026-05-28
ANZ558 Air New Zealand 4 2026-05-20
ANZ547 Air New Zealand 4 2026-05-20
ANZ481 Air New Zealand 4 2026-05-25
ANZ449 Air New Zealand 4 2026-05-18
ANZ445 Air New Zealand 4 2026-05-26
ANZ436 Air New Zealand 4 2026-05-22
ANZ407 Air New Zealand 4 2026-04-27
ANZ405 Air New Zealand 4 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 ANZ620 ZQN → AKL May 30, 01:10 UTCMay 30, 02:45 UTC1h 35m
2026-05-29 ANZ617 AKL → ZQN May 29, 22:30 UTCMay 29, 23:55 UTC1h 25m
2026-05-29 ANZ534 CHC → AKL May 29, 20:10 UTCMay 29, 21:10 UTC1h 0m
2026-05-29 ANZ565 AKL → CHC May 29, 06:45 UTCMay 29, 08:00 UTC1h 15m
2026-05-29 ANZ660 DUD → AKL May 29, 03:25 UTCMay 29, 04:50 UTC1h 25m
2026-05-29 ANZ675 AKL → DUD May 29, 00:50 UTCMay 29, 02:25 UTC1h 35m
2026-05-28 ANZ574 CHC → AKL May 28, 08:35 UTCMay 28, 09:40 UTC1h 5m
2026-05-28 ANZ563 AKL → CHC May 28, 06:30 UTCMay 28, 07:40 UTC1h 10m
2026-05-28 ANZ440 WLG → AKL May 28, 04:40 UTCMay 28, 05:30 UTC50m
2026-05-28 ANZ433 AKL → WLG May 28, 02:55 UTCMay 28, 03:40 UTC45m
2026-05-28 ANZ538 CHC → AKL May 28, 00:45 UTCMay 28, 01:55 UTC1h 10m
2026-05-27 ANZ521 AKL → CHC May 27, 23:10 UTCMay 27, 23:45 UTC35m
2026-05-27 ANZ521 AKL → CHC May 27, 19:45 UTCMay 27, 22:15 UTC2h 30m
2026-05-27 ANZ566 CHC → AKL May 27, 06:15 UTCMay 27, 07:15 UTC1h 1m
2026-05-27 ANZ555 AKL → CHC May 27, 04:04 UTCMay 27, 05:19 UTC1h 15m
2026-05-27 ANZ428 WLG → AKL May 27, 01:05 UTCMay 27, 01:44 UTC40m
2026-05-26 ANZ686 DUD → WLG May 26, 23:05 UTCMay 27, 00:00 UTC55m
2026-05-26 ANZ681 WLG → DUD May 26, 21:14 UTCMay 26, 22:15 UTC1h 0m
2026-05-26 ANZ332 CHC → WLG May 26, 19:34 UTCMay 26, 20:05 UTC30m
2026-05-26 ANZ573 AKL → CHC May 26, 08:50 UTCMay 26, 09:59 UTC1h 10m
2026-05-26 ANZ466 WLG → AKL May 26, 06:49 UTCMay 26, 07:34 UTC45m
2026-05-26 ANZ445 AKL → WLG May 26, 05:10 UTCMay 26, 05:59 UTC50m
2026-05-26 ANZ616 ZQN → AKL May 26, 00:19 UTCMay 26, 01:40 UTC1h 20m
2026-05-25 ANZ635 AKL → ZQN May 25, 21:35 UTCMay 25, 23:00 UTC1h 25m
2026-05-25 ANZ584 CHC → AKL May 25, 18:50 UTCMay 25, 19:59 UTC1h 9m
2026-05-25 ANZ567 AKL → CHC May 25, 07:55 UTCMay 25, 09:05 UTC1h 10m
2026-05-25 ANZ448 WLG → AKL May 25, 06:15 UTCMay 25, 07:00 UTC45m
2026-05-25 ANZ481 AKL → WLG May 25, 04:25 UTCMay 25, 05:20 UTC55m
2026-05-25 ANZ698 IVC → AKL May 25, 01:55 UTCMay 25, 02:20 UTC25m
2026-05-24 ANZ699 AKL → IVC May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 ANZ458 WLG → AKL May 24, 09:35 UTCMay 24, 10:15 UTC40m
2026-05-24 ANZ455 WLG → CHC May 24, 07:40 UTCMay 24, 08:30 UTC50m
2026-05-24 ANZ578 CHC → AKL May 24, 05:30 UTCMay 24, 06:30 UTC1h 0m
2026-05-24 ANZ551 AKL → CHC May 24, 03:20 UTCMay 24, 04:30 UTC1h 10m
2026-05-24 ANZ616 ZQN → AKL May 24, 00:30 UTCMay 24, 01:50 UTC1h 20m
2026-05-23 ANZ635 AKL → ZQN May 23, 21:40 UTCMay 23, 23:15 UTC1h 35m
2026-05-23 ANZ626 ZQN → AKL May 23, 05:40 UTCMay 23, 07:05 UTC1h 25m
2026-05-23 ANZ623 AKL → ZQN May 23, 03:15 UTCMay 23, 04:30 UTC1h 15m
2026-05-23 ANZ428 WLG → AKL May 23, 01:25 UTCMay 23, 02:15 UTC50m
2026-05-22 ANZ686 DUD → WLG May 22, 22:55 UTCMay 22, 23:55 UTC1h 0m
2026-05-22 ANZ681 WLG → DUD May 22, 21:05 UTCMay 22, 22:05 UTC1h 0m
2026-05-22 ANZ332 CHC → WLG May 22, 19:10 UTCMay 22, 19:45 UTC35m
2026-05-22 ANZ573 AKL → CHC May 22, 08:50 UTCMay 22, 10:00 UTC1h 10m
2026-05-22 ANZ466 WLG → AKL May 22, 06:55 UTCMay 22, 07:45 UTC50m
2026-05-22 ANZ445 AKL → WLG May 22, 05:15 UTCMay 22, 06:05 UTC50m
2026-05-22 ANZ436 WLG → AKL May 22, 03:10 UTCMay 22, 04:00 UTC50m
2026-05-22 ANZ429 AKL → WLG May 22, 01:15 UTCMay 22, 02:05 UTC50m
2026-05-21 ANZ538 CHC → AKL May 21, 23:10 UTCMay 22, 00:10 UTC1h 0m
2026-05-21 ANZ527 AKL → CHC May 21, 21:10 UTCMay 21, 22:15 UTC1h 5m
2026-05-21 ANZ584 CHC → AKL May 21, 19:00 UTCMay 21, 20:05 UTC1h 5m

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

Mode-S C81D9D frequently asked

What is Mode-S code C81D9D?
C81D9D is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-OJQ.
Where is Mode-S C81D9D registered?
Mode-S code C81D9D 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 C81D9D broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C81D9D, octal 62016635, decimal 13,114,781.
What flights does C81D9D operate?
Mode-S C81D9D has broadcast 20 distinct callsigns, including ANZ538, ANZ676, ANZ673, ANZ612, ANZ584.