sensors Mode-S transponder

0D12AC

ICAO 24-bit transponder address · allocated to Mexico

Currently assigned to XA-VMH · AIRBUS A-320neo

Hex
0D12AC
Octal
03211254
Decimal
856,748
Country
MX
Tail
XA-VMH
Type
A20N
No current signal · last broadcast 18h ago
Flights observed
10
Distinct callsigns
6
Country
MX
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 0D12AC.

Country allocation

The ICAO 24-bit address 0D12AC falls within the block assigned to Mexico (MX) by ICAO Annex 10, Volume III. Every aircraft registered in Mexico 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 6 distinct

Callsign Airline Flights Last seen
VIV5084 - 2 2026-04-13
VIV5075 VivaAerobus 2 2026-04-13
VIV5074 - 2 2026-04-13
VIV5043 VivaAerobus 2 2026-04-14
VIV5085 - 1 2026-04-13
VIV5042 - 1 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 VIV5043 MZT → TIJ Apr 14, 05:20 UTCApr 14, 06:30 UTC1h 10m
2026-04-13 VIV5085 - Apr 13, 22:35 UTCApr 13, 23:40 UTC1h 5m
2026-04-13 VIV5084 - Apr 13, 17:45 UTCApr 13, 18:50 UTC1h 5m
2026-04-13 VIV5075 OAX → TIJ Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 VIV5075 OAX → TIJ Apr 13, 12:45 UTCApr 13, 16:15 UTC3h 30m
2026-04-13 VIV5074 - Apr 13, 08:20 UTCApr 13, 11:15 UTC2h 55m
2026-04-13 VIV5074 - Apr 13, 08:05 UTCApr 13, 08:15 UTC10m
2026-04-13 VIV5043 - Apr 13, 05:10 UTCApr 13, 06:20 UTC1h 10m
2026-04-13 VIV5042 - Apr 13, 01:15 UTCApr 13, 02:20 UTC1h 5m
2026-04-12 VIV5084 - Apr 12, 17:45 UTCApr 12, 18:45 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 XA-VMH page for operator, model, and routing details .

Mode-S 0D12AC frequently asked

What is Mode-S code 0D12AC?
0D12AC is an ICAO 24-bit transponder address. Allocated to Mexico. Assigned to XA-VMH.
Where is Mode-S 0D12AC registered?
Mode-S code 0D12AC is allocated to Mexico (MX). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0D12AC broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0D12AC, octal 03211254, decimal 856,748.
What flights does 0D12AC operate?
Mode-S 0D12AC has broadcast 6 distinct callsigns, including VIV5084, VIV5075, VIV5074, VIV5043, VIV5085.