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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
Broadcasting now · callsign VIV5140 · 35,000 ft
Flights observed
340
Distinct callsigns
20
Country
MX
Last broadcast
1h ago

Current position

0D123A is currently broadcasting. Map zoomed to live position.

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 - 31 2026-07-13
VIV7428 - 23 2026-07-13
VIV1380 - 6 2026-06-26
VIV1379 VivaAerobus 6 2026-06-26
VIV1254 - 6 2026-07-12
VIV1253 - 6 2026-07-11
VIV5018 - 5 2026-07-11
VIV3201 VivaAerobus 5 2026-05-28
VIV3200 VivaAerobus 5 2026-05-28
VIV2198 - 5 2026-06-26
VIV1373 - 5 2026-06-26
VIV1069 VivaAerobus 5 2026-05-29
VIV7443 VivaAerobus 4 2026-06-09
VIV7064 VivaAerobus 4 2026-05-09
VIV2199 - 4 2026-06-25
VIV1374 - 4 2026-06-26
VIV1118 - 4 2026-07-05
VIV1117 - 4 2026-07-05
VIV7442 VivaAerobus 3 2026-06-08
VIV7065 VivaAerobus 3 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 VIV5140 - Jul 14, 08:55 UTCJul 14, 09:55 UTC1h 0m
2026-07-13 VIV7429 - Jul 13, 23:50 UTCJul 14, 00:50 UTC1h 0m
2026-07-13 VIV7429 - Jul 13, 22:05 UTCJul 13, 22:15 UTC10m
2026-07-13 VIV7428 - Jul 13, 17:20 UTCJul 13, 20:45 UTC3h 25m
2026-07-13 VIV7428 - Jul 13, 13:15 UTCJul 13, 14:30 UTC1h 15m
2026-07-13 VIV3117 - Jul 13, 02:10 UTCJul 13, 08:35 UTC6h 25m
2026-07-12 VIV1254 - Jul 12, 21:40 UTCJul 13, 00:30 UTC2h 50m
2026-07-12 VIV1335 - Jul 12, 19:50 UTCJul 12, 20:15 UTC25m
2026-07-12 VIV1334 - Jul 12, 17:55 UTCJul 12, 18:25 UTC30m
2026-07-12 VIV1167 - Jul 12, 12:45 UTCJul 12, 16:15 UTC3h 30m
2026-07-12 VIV1021 CUN → MEX Jul 12, 05:40 UTCJul 12, 07:31 UTC1h 50m
2026-07-12 VIV1020 MEX → CUN Jul 12, 02:35 UTCJul 12, 04:25 UTC1h 50m
2026-07-12 VIV1151 - Jul 12, 00:55 UTCJul 12, 01:10 UTC15m
2026-07-11 VIV1150 - Jul 11, 21:30 UTCJul 11, 21:45 UTC15m
2026-07-11 VIV1253 - Jul 11, 19:55 UTCJul 11, 20:10 UTC15m
2026-07-11 VIV1253 - Jul 11, 17:00 UTCJul 11, 18:10 UTC1h 10m
2026-07-11 VIV5018 - Jul 11, 08:30 UTCJul 11, 15:00 UTC6h 30m
2026-07-10 VIV7045 - Jul 10, 17:45 UTCJul 11, 02:30 UTC8h 45m
2026-07-10 VIV5146 - Jul 10, 08:10 UTCJul 10, 16:05 UTC7h 55m
2026-07-09 VIV7054 - Jul 9, 18:10 UTCJul 10, 03:55 UTC9h 45m
2026-07-09 VIV5141 - Jul 9, 13:40 UTCJul 9, 16:55 UTC3h 15m
2026-07-09 VIV5140 - Jul 9, 09:00 UTCJul 9, 12:25 UTC3h 25m
2026-07-09 VIV5008 - Jul 9, 02:15 UTCJul 9, 06:45 UTC4h 30m
2026-07-08 VIV7429 - Jul 8, 23:55 UTCJul 9, 01:00 UTC1h 5m
2026-07-08 VIV7429 - Jul 8, 22:05 UTCJul 8, 22:15 UTC10m
2026-07-08 VIV7429 - Jul 8, 17:10 UTCJul 8, 20:45 UTC3h 35m
2026-07-08 VIV7428 - Jul 8, 13:00 UTCJul 8, 14:05 UTC1h 5m
2026-07-08 VIV5009 - Jul 8, 02:10 UTCJul 8, 06:25 UTC4h 15m
2026-07-07 VIV1254 - Jul 7, 21:50 UTCJul 8, 01:00 UTC3h 10m
2026-07-07 VIV1253 - Jul 7, 19:35 UTCJul 7, 19:45 UTC10m
2026-07-07 VIV1253 - Jul 7, 16:55 UTCJul 7, 18:05 UTC1h 10m
2026-07-07 VIV5019 - Jul 7, 09:05 UTCJul 7, 15:40 UTC6h 35m
2026-07-07 VIV1248 - Jul 7, 06:10 UTCJul 7, 07:15 UTC1h 5m
2026-07-07 VIV1248 - Jul 7, 04:15 UTCJul 7, 04:35 UTC20m
2026-07-07 VIV1127 MTY → MEX Jul 7, 01:45 UTCJul 7, 02:50 UTC1h 5m
2026-07-06 VIV731 - Jul 6, 21:35 UTCJul 7, 00:20 UTC2h 45m
2026-07-06 VIV730 MTY → MIA Jul 6, 15:40 UTCJul 6, 18:25 UTC2h 45m
2026-07-06 VIV623 - Jul 6, 07:40 UTCJul 6, 10:05 UTC2h 25m
2026-07-06 VIV622 - Jul 6, 02:40 UTCJul 6, 05:20 UTC2h 40m
2026-07-05 VIV4284 MTY → MTY Jul 5, 20:00 UTCJul 6, 00:20 UTC4h 20m
2026-07-05 VIV4205 - Jul 5, 15:45 UTCJul 5, 18:55 UTC3h 10m
2026-07-05 VIV1118 - Jul 5, 13:30 UTCJul 5, 14:40 UTC1h 10m
2026-07-05 VIV1117 MTY → MEX Jul 5, 11:10 UTCJul 5, 12:10 UTC1h 0m
2026-07-05 VIV1138 MEX → MTY Jul 5, 01:00 UTCJul 5, 02:10 UTC1h 10m
2026-07-04 VIV1137 - Jul 4, 22:15 UTCJul 4, 23:45 UTC1h 30m
2026-07-04 VIV4177 - Jul 4, 17:10 UTCJul 4, 19:55 UTC2h 45m
2026-07-04 VIV4001 PBC → MTY Jul 4, 14:50 UTCJul 4, 16:00 UTC1h 10m
2026-07-04 VIV4000 MTY → PBC Jul 4, 12:35 UTCJul 4, 13:35 UTC1h 0m
2026-07-03 VIV002 - Jul 3, 21:45 UTCJul 4, 01:45 UTC4h 0m
2026-07-03 VIV2168 CUN → MTY Jul 3, 18:15 UTCJul 3, 20:15 UTC2h 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-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?
Yes. Mode-S 0D123A is currently airborne.
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, VIV1380, VIV1379, VIV1254.