Apparatus

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sensors Mode-S transponder

151DF6

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73206 · AIRBUS A-319

Hex
151DF6
Octal
05216766
Decimal
1,383,926
Country
RU
Tail
RA-73206
Type
A319
No current signal · last broadcast Jul 24, 17:10 UTC
Flights observed
128
Distinct callsigns
20
Country
RU
Last broadcast
Jul 24, 17:10 UTC

Last known position

Most recent position reported by Mode-S 151DF6.

Country allocation

The ICAO 24-bit address 151DF6 falls within the block assigned to Russia (RU) by ICAO Annex 10, Volume III. Every aircraft registered in Russia 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
SDM6721 - 8 2026-07-21
SDM6722 Rossiya - Russian Airlines 7 2026-07-21
SDM6621 - 7 2026-07-23
SDM6923 - 6 2026-07-01
SDM6795 - 5 2026-07-16
SDM6961 - 4 2026-06-26
SDM6924 - 4 2026-07-01
SDM6876 - 4 2026-07-15
SDM6783 - 4 2026-07-05
SDM6572 - 4 2026-07-24
SDM6532 Rossiya - Russian Airlines 4 2026-05-25
SDM6450 Rossiya - Russian Airlines 4 2026-05-18
SDM6962 Rossiya - Russian Airlines 3 2026-06-26
SDM6875 - 3 2026-07-17
SDM6784 - 3 2026-06-22
SDM6725 - 3 2026-06-19
SDM6476 - 3 2026-06-28
SDM6449 Rossiya - Russian Airlines 3 2026-05-03
SDM6112 Rossiya - Russian Airlines 3 2026-06-03
SDM6926 Rossiya - Russian Airlines 2 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 SDM6572 - Jul 24, 13:25 UTCJul 24, 17:10 UTC3h 45m
2026-07-23 SDM6572 - Jul 23, 19:40 UTCJul 24, 17:10 UTC21h 30m
2026-07-23 SDM6621 - Jul 23, 17:45 UTCJul 23, 17:55 UTC10m
2026-07-22 SDM6747 - Jul 22, 15:20 UTCJul 22, 23:25 UTC8h 5m
2026-07-21 SDM6747 - Jul 21, 19:35 UTCJul 22, 18:25 UTC22h 50m
2026-07-21 SDM6722 ALA → KJA Jul 21, 19:00 UTCJul 22, 15:55 UTC20h 55m
2026-07-21 SDM6722 ALA → KJA Jul 21, 15:35 UTCJul 22, 15:30 UTC23h 55m
2026-07-21 SDM6721 - Jul 21, 14:35 UTCJul 21, 20:10 UTC5h 35m
2026-07-20 SDM6721 - Jul 20, 19:50 UTCJul 21, 19:20 UTC23h 30m
2026-07-20 SDM6621 - Jul 20, 17:40 UTCJul 20, 17:55 UTC15m
2026-07-19 SDM6721 - Jul 19, 15:00 UTCJul 19, 20:45 UTC5h 45m
2026-07-17 SDM6875 - Jul 17, 20:35 UTCJul 18, 11:45 UTC15h 11m
2026-07-17 SDM6875 - Jul 17, 13:55 UTCJul 18, 11:45 UTC21h 51m
2026-07-16 SDM6796 FRU → KJA Jul 16, 21:35 UTCJul 17, 21:05 UTC23h 30m
2026-07-16 SDM6796 FRU → KJA Jul 16, 21:15 UTCJul 17, 14:39 UTC17h 25m
2026-07-16 SDM6795 - Jul 16, 16:05 UTCJul 17, 14:39 UTC22h 35m
2026-07-15 SDM6795 - Jul 15, 21:35 UTCJul 16, 21:30 UTC23h 55m
2026-07-15 SDM6795 - Jul 15, 20:30 UTCJul 16, 17:30 UTC21h 0m
2026-07-15 SDM6876 - Jul 15, 09:45 UTCJul 15, 21:40 UTC11h 55m
2026-07-14 SDM6876 - Jul 14, 21:35 UTCJul 15, 21:30 UTC23h 54m
2026-07-14 SDM6876 - Jul 14, 20:50 UTCJul 15, 10:35 UTC13h 44m
2026-07-14 SDM6876 - Jul 14, 09:55 UTCJul 14, 21:55 UTC12h 0m
2026-07-13 SDM6722 - Jul 13, 15:35 UTCJul 14, 10:40 UTC19h 5m
2026-07-13 SDM6721 - Jul 13, 15:00 UTCJul 14, 10:40 UTC19h 40m
2026-07-12 SDM6721 - Jul 12, 20:10 UTCJul 13, 16:20 UTC20h 10m
2026-07-12 SDM6621 - Jul 12, 18:05 UTCJul 12, 18:15 UTC10m
2026-07-11 SDM6795 - Jul 11, 14:25 UTCJul 11, 20:25 UTC6h 0m
2026-07-10 SDM6795 - Jul 10, 19:50 UTCJul 11, 19:30 UTC23h 40m
2026-07-09 SDM6722 - Jul 9, 15:00 UTCJul 9, 21:30 UTC6h 30m
2026-07-08 SDM6721 - Jul 8, 20:00 UTCJul 9, 16:15 UTC20h 15m
2026-07-08 SDM6621 - Jul 8, 18:05 UTCJul 8, 18:15 UTC10m
2026-07-05 SDM6783 - Jul 5, 15:05 UTCJul 5, 21:35 UTC6h 30m
2026-07-04 SDM6783 - Jul 4, 22:25 UTCJul 5, 21:30 UTC23h 5m
2026-07-04 SDM6825 KJA → MCX Jul 4, 13:20 UTCJul 4, 23:05 UTC9h 45m
2026-07-01 SDM6924 - Jul 1, 12:15 UTCJul 1, 12:45 UTC30m
2026-07-01 SDM6923 - Jul 1, 10:05 UTCJul 1, 10:15 UTC10m
2026-06-30 SDM6572 - Jun 30, 14:20 UTCJun 30, 17:55 UTC3h 35m
2026-06-28 SDM6476 - Jun 28, 22:15 UTCJun 29, 12:55 UTC14h 40m
2026-06-26 SDM6962 AYT → LED Jun 26, 12:19 UTCJun 27, 06:54 UTC18h 35m
2026-06-26 SDM6961 - Jun 26, 09:05 UTCJun 26, 10:15 UTC1h 10m
2026-06-25 SDM6862 MRV → LED Jun 25, 09:59 UTCJun 25, 10:15 UTC15m
2026-06-23 SDM6572 KJA → LED Jun 23, 14:15 UTCJun 24, 03:15 UTC13h 0m
2026-06-22 SDM6784 - Jun 22, 19:49 UTCJun 23, 17:44 UTC21h 55m
2026-06-22 SDM6784 - Jun 22, 13:59 UTCJun 22, 21:14 UTC7h 15m
2026-06-21 SDM6783 - Jun 21, 19:55 UTCJun 22, 15:14 UTC19h 20m
2026-06-21 SDM6621 - Jun 21, 17:50 UTCJun 21, 18:00 UTC10m
2026-06-19 SDM6725 - Jun 19, 14:44 UTCJun 19, 22:24 UTC7h 40m
2026-06-18 SDM6725 - Jun 18, 19:35 UTCJun 19, 16:09 UTC20h 34m
2026-06-18 SDM6722 - Jun 18, 19:20 UTCJun 19, 16:09 UTC20h 49m
2026-06-18 SDM6722 - Jun 18, 15:35 UTCJun 19, 15:19 UTC23h 44m

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 RA-73206 page for operator, model, and routing details .

Mode-S 151DF6 frequently asked

What is Mode-S code 151DF6?
151DF6 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73206.
Where is Mode-S 151DF6 registered?
Mode-S code 151DF6 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DF6 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 17:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DF6, octal 05216766, decimal 1,383,926.
What flights does 151DF6 operate?
Mode-S 151DF6 has broadcast 20 distinct callsigns, including SDM6721, SDM6722, SDM6621, SDM6923, SDM6795.