Apparatus

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sensors Mode-S transponder

C81D8E

ICAO 24-bit transponder address · allocated to New Zealand

Currently assigned to ZK-OAB · AIRBUS A-320

Hex
C81D8E
Octal
62016616
Decimal
13,114,766
Country
NZ
Tail
ZK-OAB
Type
A320
No current signal · last broadcast 8h ago
Flights observed
306
Distinct callsigns
20
Country
NZ
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S C81D8E.

Country allocation

The ICAO 24-bit address C81D8E 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
ANZ410 Air New Zealand 8 2026-06-04
ANZ699 Air New Zealand 7 2026-06-04
ANZ698 Air New Zealand 7 2026-06-05
ANZ555 Air New Zealand 6 2026-06-03
ANZ456 Air New Zealand 6 2026-05-31
ANZ441 Air New Zealand 6 2026-06-05
ANZ406 Air New Zealand 6 2026-06-08
ANZ401 Air New Zealand 6 2026-06-04
ANZ600 Air New Zealand 5 2026-06-01
ANZ543 Air New Zealand 5 2026-06-07
ANZ523 Air New Zealand 5 2026-06-03
ANZ481 Air New Zealand 5 2026-05-23
ANZ448 Air New Zealand 5 2026-06-05
ANZ402 Air New Zealand 5 2026-06-03
ANZ676 Air New Zealand 4 2026-05-31
ANZ617 Air New Zealand 4 2026-05-30
ANZ613 Air New Zealand 4 2026-06-06
ANZ605 Air New Zealand 4 2026-06-01
ANZ580 Air New Zealand 4 2026-06-03
ANZ570 Air New Zealand 4 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-09 ANZ644 ZQN → AKL Jun 9, 22:35 UTCJun 9, 23:10 UTC35m
2026-06-09 ANZ659 CHC → ZQN Jun 9, 21:00 UTCJun 9, 21:25 UTC25m
2026-06-09 ANZ327 WLG → CHC Jun 9, 20:25 UTCJun 9, 20:35 UTC10m
2026-06-09 ANZ457 AKL → WLG Jun 9, 08:15 UTCJun 9, 09:10 UTC55m
2026-06-09 ANZ626 ZQN → AKL Jun 9, 05:50 UTCJun 9, 07:05 UTC1h 15m
2026-06-09 ANZ623 AKL → ZQN Jun 9, 03:20 UTCJun 9, 04:45 UTC1h 25m
2026-06-08 ANZ409 AKL → WLG Jun 8, 20:25 UTCJun 8, 22:00 UTC1h 35m
2026-06-08 ANZ406 WLG → AKL Jun 8, 18:45 UTCJun 8, 19:25 UTC40m
2026-06-08 ANZ457 AKL → WLG Jun 8, 08:15 UTCJun 8, 09:05 UTC50m
2026-06-08 ANZ468 WLG → AKL Jun 8, 05:05 UTCJun 8, 05:55 UTC50m
2026-06-08 ANZ429 AKL → WLG Jun 8, 01:15 UTCJun 8, 02:05 UTC50m
2026-06-07 ANZ538 CHC → AKL Jun 7, 23:15 UTCJun 8, 00:20 UTC1h 5m
2026-06-07 ANZ527 AKL → CHC Jun 7, 21:05 UTCJun 7, 22:20 UTC1h 15m
2026-06-07 ANZ476 WLG → AKL Jun 7, 19:10 UTCJun 7, 19:55 UTC45m
2026-06-07 ANZ461 AKL → WLG Jun 7, 09:20 UTCJun 7, 10:10 UTC50m
2026-06-07 ANZ570 CHC → AKL Jun 7, 07:20 UTCJun 7, 08:20 UTC1h 0m
2026-06-07 ANZ656 ZQN → CHC Jun 7, 05:05 UTCJun 7, 05:35 UTC30m
2026-06-07 ANZ653 CHC → ZQN Jun 7, 03:30 UTCJun 7, 03:55 UTC25m
2026-06-07 ANZ543 AKL → CHC Jun 7, 01:20 UTCJun 7, 02:35 UTC1h 15m
2026-06-06 ANZ612 ZQN → AKL Jun 6, 22:44 UTCJun 7, 00:05 UTC1h 20m
2026-06-06 ANZ613 AKL → ZQN Jun 6, 20:05 UTCJun 6, 21:25 UTC1h 20m
2026-06-06 ANZ558 CHC → AKL Jun 6, 04:45 UTCJun 6, 05:50 UTC1h 5m
2026-06-06 ANZ323 HLZ → CHC Jun 6, 02:35 UTCJun 6, 03:40 UTC1h 5m
2026-06-06 ANZ322 CHC → HLZ Jun 6, 00:35 UTCJun 6, 01:30 UTC55m
2026-06-05 ANZ644 ZQN → AKL Jun 5, 22:50 UTCJun 5, 23:30 UTC40m
2026-06-05 ANZ659 CHC → ZQN Jun 5, 21:00 UTCJun 5, 21:25 UTC25m
2026-06-05 ANZ327 WLG → CHC Jun 5, 19:00 UTCJun 5, 19:40 UTC40m
2026-06-05 ANZ455 WLG → CHC Jun 5, 08:35 UTCJun 5, 09:20 UTC45m
2026-06-05 ANZ448 WLG → AKL Jun 5, 06:25 UTCJun 5, 07:20 UTC55m
2026-06-05 ANZ441 AKL → WLG Jun 5, 04:20 UTCJun 5, 05:10 UTC50m
2026-06-05 ANZ698 IVC → AKL Jun 5, 00:50 UTCJun 5, 02:40 UTC1h 50m
2026-06-04 ANZ699 AKL → IVC Jun 4, 22:00 UTCJun 4, 23:35 UTC1h 35m
2026-06-04 ANZ410 WLG → AKL Jun 4, 20:05 UTCJun 4, 20:55 UTC50m
2026-06-04 ANZ401 AKL → WLG Jun 4, 18:20 UTCJun 4, 19:10 UTC50m
2026-06-04 ANZ558 CHC → AKL Jun 4, 04:15 UTCJun 4, 05:30 UTC1h 15m
2026-06-04 ANZ547 AKL → CHC Jun 4, 02:15 UTCJun 4, 03:20 UTC1h 5m
2026-06-03 ANZ580 CHC → AKL Jun 3, 22:15 UTCJun 3, 23:25 UTC1h 10m
2026-06-03 ANZ523 AKL → CHC Jun 3, 20:10 UTCJun 3, 21:15 UTC1h 5m
2026-06-03 ANZ402 WLG → AKL Jun 3, 18:10 UTCJun 3, 18:50 UTC40m
2026-06-03 ANZ457 AKL → WLG Jun 3, 08:25 UTCJun 3, 09:10 UTC45m
2026-06-03 ANZ566 CHC → AKL Jun 3, 06:25 UTCJun 3, 07:25 UTC1h 0m
2026-06-03 ANZ555 AKL → CHC Jun 3, 04:15 UTCJun 3, 05:20 UTC1h 5m
2026-06-03 ANZ550 CHC → AKL Jun 3, 02:15 UTCJun 3, 03:20 UTC1h 5m
2026-06-03 ANZ539 AKL → CHC Jun 3, 00:15 UTCJun 3, 01:20 UTC1h 5m
2026-06-02 ANZ422 WLG → AKL Jun 2, 22:05 UTCJun 2, 22:55 UTC50m
2026-06-02 ANZ409 AKL → WLG Jun 2, 20:30 UTCJun 2, 21:15 UTC45m
2026-06-02 ANZ406 WLG → AKL Jun 2, 18:40 UTCJun 2, 19:30 UTC50m
2026-06-02 ANZ384 CHC → WLG Jun 2, 07:55 UTCJun 2, 08:30 UTC35m
2026-06-02 ANZ377 WLG → CHC Jun 2, 06:25 UTCJun 2, 06:55 UTC30m
2026-06-01 ANZ600 ZQN → WLG Jun 1, 23:40 UTCJun 2, 00:40 UTC1h 0m

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

Mode-S C81D8E frequently asked

What is Mode-S code C81D8E?
C81D8E is an ICAO 24-bit transponder address. Allocated to New Zealand. Assigned to ZK-OAB.
Where is Mode-S C81D8E registered?
Mode-S code C81D8E 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 C81D8E 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 C81D8E, octal 62016616, decimal 13,114,766.
What flights does C81D8E operate?
Mode-S C81D8E has broadcast 20 distinct callsigns, including ANZ410, ANZ699, ANZ698, ANZ555, ANZ456.