Apparatus

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sensors Mode-S transponder

0D123A

ICAO 24-bit transponder address · allocated to Mexico

Currently assigned to XA-VCF · AIRBUS A-321

Hex
0D123A
Octal
03211072
Decimal
856,634
Country
MX
Tail
XA-VCF
Type
A321
No current signal · last broadcast 23h ago
Flights observed
122
Distinct callsigns
20
Country
MX
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 0D123A.

Country allocation

The ICAO 24-bit address 0D123A 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 20 distinct

Callsign Airline Flights Last seen
VIV7429 VivaAerobus 26 2026-05-23
VIV7428 VivaAerobus 20 2026-05-22
VIV3201 VivaAerobus 5 2026-05-28
VIV3200 VivaAerobus 5 2026-05-28
VIV1069 VivaAerobus 5 2026-05-29
VIV7064 VivaAerobus 4 2026-05-09
VIV5018 VivaAerobus 4 2026-05-15
VIV1254 VivaAerobus 4 2026-05-15
VIV7065 VivaAerobus 3 2026-05-09
VIV5117 VivaAerobus 3 2026-05-19
VIV5116 VivaAerobus 3 2026-05-18
VIV3207 VivaAerobus 3 2026-05-28
VIV1065 VivaAerobus 3 2026-05-27
VIV7432 VivaAerobus 2 2026-05-10
VIV7371 VivaAerobus 2 2026-05-21
VIV7079 - 2 2026-05-18
VIV7054 VivaAerobus 2 2026-04-30
VIV7045 VivaAerobus 2 2026-05-01
VIV7044 VivaAerobus 2 2026-04-27
VIV5019 VivaAerobus 2 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 VIV1070 MEX → GDL May 29, 04:40 UTCMay 29, 04:55 UTC15m
2026-05-29 VIV1069 GDL → MEX May 29, 03:05 UTCMay 29, 03:30 UTC25m
2026-05-29 VIV1066 MEX → GDL May 29, 00:35 UTCMay 29, 00:50 UTC15m
2026-05-28 VIV3207 MTY → GDL May 28, 19:15 UTCMay 28, 22:50 UTC3h 35m
2026-05-28 VIV3201 MTY → GDL May 28, 14:40 UTCMay 28, 18:20 UTC3h 40m
2026-05-28 VIV3200 GDL → MTY May 28, 05:10 UTCMay 28, 13:05 UTC7h 55m
2026-05-28 VIV1069 GDL → MEX May 28, 03:40 UTCMay 28, 04:05 UTC25m
2026-05-28 VIV1066 MEX → GDL May 28, 00:35 UTCMay 28, 00:45 UTC10m
2026-05-27 VIV1065 GDL → MEX May 27, 19:10 UTCMay 27, 23:30 UTC4h 20m
2026-05-27 VIV3201 MTY → GDL May 27, 14:40 UTCMay 27, 18:15 UTC3h 35m
2026-05-27 VIV3200 GDL → MTY May 27, 06:04 UTCMay 27, 13:00 UTC6h 56m
2026-05-26 VIV1069 GDL → MEX May 26, 19:15 UTCMay 27, 04:49 UTC9h 35m
2026-05-26 VIV3201 MTY → GDL May 26, 14:35 UTCMay 26, 18:05 UTC3h 30m
2026-05-26 VIV3200 GDL → MTY May 26, 05:34 UTCMay 26, 13:04 UTC7h 30m
2026-05-26 VIV1069 GDL → MEX May 26, 03:45 UTCMay 26, 04:04 UTC20m
2026-05-25 VIV1063 - May 25, 23:24 UTCMay 25, 23:45 UTC20m
2026-05-25 VIV1065 GDL → MEX May 25, 22:05 UTCMay 25, 22:19 UTC15m
2026-05-25 VIV3207 MTY → GDL May 25, 18:00 UTCMay 25, 21:30 UTC3h 30m
2026-05-25 VIV3206 GDL → MTY May 25, 13:20 UTCMay 25, 17:05 UTC3h 45m
2026-05-25 VIV3200 GDL → MTY May 25, 05:15 UTCMay 25, 11:55 UTC6h 40m
2026-05-25 VIV1069 GDL → MEX May 25, 03:10 UTCMay 25, 03:50 UTC40m
2026-05-24 VIV1065 GDL → MEX May 24, 23:00 UTCMay 24, 23:10 UTC10m
2026-05-24 VIV3207 MTY → GDL May 24, 19:15 UTCMay 24, 19:35 UTC20m
2026-05-24 VIV3201 MTY → GDL May 24, 14:45 UTCMay 24, 18:15 UTC3h 30m
2026-05-24 VIV3200 GDL → MTY May 24, 05:15 UTCMay 24, 13:10 UTC7h 55m
2026-05-23 VIV7429 NLU → TIJ May 23, 00:40 UTCMay 23, 01:10 UTC30m
2026-05-22 VIV7429 NLU → TIJ May 22, 17:05 UTCMay 22, 20:40 UTC3h 35m
2026-05-22 VIV7428 TIJ → NLU May 22, 13:05 UTCMay 22, 14:10 UTC1h 5m
2026-05-21 VIV7429 NLU → TIJ May 21, 23:50 UTCMay 22, 01:00 UTC1h 10m
2026-05-21 VIV7429 NLU → TIJ May 21, 17:00 UTCMay 21, 20:40 UTC3h 40m
2026-05-21 VIV7428 TIJ → NLU May 21, 13:05 UTCMay 21, 14:10 UTC1h 5m
2026-05-21 VIV7371 LAP → TIJ May 21, 01:45 UTCMay 21, 02:40 UTC55m
2026-05-20 VIV7429 NLU → TIJ May 20, 17:10 UTCMay 20, 20:40 UTC3h 30m
2026-05-20 VIV7428 TIJ → NLU May 20, 13:10 UTCMay 20, 14:20 UTC1h 10m
2026-05-19 VIV5117 PBC → TIJ May 19, 03:20 UTCMay 19, 06:45 UTC3h 25m
2026-05-18 VIV5116 TIJ → PBC May 18, 23:10 UTCMay 19, 02:25 UTC3h 15m
2026-05-18 VIV7079 - May 18, 14:00 UTCMay 18, 21:15 UTC7h 14m
2026-05-17 VIV7429 NLU → TIJ May 17, 22:10 UTCMay 18, 01:15 UTC3h 5m
2026-05-17 VIV7429 NLU → TIJ May 17, 20:01 UTCMay 17, 20:50 UTC50m
2026-05-17 VIV7428 TIJ → NLU May 17, 17:10 UTCMay 17, 17:50 UTC40m
2026-05-17 VIV7428 TIJ → NLU May 17, 13:05 UTCMay 17, 14:10 UTC1h 5m
2026-05-16 VIV5008 TIJ → CUL May 16, 01:55 UTCMay 16, 06:31 UTC4h 36m
2026-05-15 VIV1254 MEX → TIJ May 15, 23:10 UTCMay 16, 00:20 UTC1h 10m
2026-05-15 VIV1254 MEX → TIJ May 15, 21:10 UTCMay 15, 21:25 UTC15m
2026-05-15 VIV1253 TIJ → MEX May 15, 19:35 UTCMay 15, 19:40 UTC5m
2026-05-15 VIV1253 TIJ → MEX May 15, 16:50 UTCMay 15, 17:50 UTC1h 0m
2026-05-15 VIV5018 TIJ → MLM May 15, 08:10 UTCMay 15, 15:00 UTC6h 49m
2026-05-14 VIV1254 MEX → TIJ May 14, 23:15 UTCMay 15, 00:25 UTC1h 10m
2026-05-14 VIV1254 MEX → TIJ May 14, 21:15 UTCMay 14, 21:25 UTC10m
2026-05-14 VIIV1253 AZP → MEX May 14, 19:20 UTCMay 14, 19:30 UTC10m

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

Mode-S 0D123A frequently asked

What is Mode-S code 0D123A?
0D123A is an ICAO 24-bit transponder address. Allocated to Mexico. Assigned to XA-VCF.
Where is Mode-S 0D123A registered?
Mode-S code 0D123A is allocated to Mexico (MX). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0D123A broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0D123A, octal 03211072, decimal 856,634.
What flights does 0D123A operate?
Mode-S 0D123A has broadcast 20 distinct callsigns, including VIV7429, VIV7428, VIV3201, VIV3200, VIV1069.