sensors Mode-S transponder

0081F2

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZS-ASN · DOUGLAS DC-3 Dakota

Hex
0081F2
Octal
00100762
Decimal
33,266
Country
ZA
Tail
ZS-ASN
Type
DC3
No current signal · last broadcast 2d ago
Flights observed
1
Distinct callsigns
1
Country
ZA
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 0081F2.

Country allocation

The ICAO 24-bit address 0081F2 falls within the block assigned to South Africa (ZA) by ICAO Annex 10, Volume III. Every aircraft registered in South Africa 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 1 distinct

Callsign Airline Flights Last seen
ZSASN - 1 2026-04-13

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-13 ZSASN - Apr 13, 11:05 UTCApr 13, 11:40 UTC35m

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 ZS-ASN page for operator, model, and routing details .

Mode-S 0081F2 frequently asked

What is Mode-S code 0081F2?
0081F2 is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZS-ASN.
Where is Mode-S 0081F2 registered?
Mode-S code 0081F2 is allocated to South Africa (ZA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0081F2 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0081F2, octal 00100762, decimal 33,266.
What flights does 0081F2 operate?
Mode-S 0081F2 has broadcast 1 distinct callsign, including ZSASN.