Apparatus

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sensors Mode-S transponder

458667

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-ASG · BOEING 737-800

Hex
458667
Octal
21303147
Decimal
4,556,391
Country
DK
Tail
OY-ASG
Type
B738
No current signal · last broadcast 55m ago
Flights observed
240
Distinct callsigns
20
Country
DK
Last broadcast
55m ago

Last known position

Most recent position reported by Mode-S 458667.

Country allocation

The ICAO 24-bit address 458667 falls within the block assigned to Denmark (DK) by ICAO Annex 10, Volume III. Every aircraft registered in Denmark 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
CAT734 - 11 2026-07-12
CAT761 - 10 2026-07-14
CAT733 - 10 2026-07-12
CAT330 - 10 2026-07-12
CAT329 - 10 2026-07-12
CAT749 - 8 2026-06-27
CAT324 - 8 2026-07-03
CAT323 Copenhagen Airtaxi 8 2026-07-03
CAT750 - 7 2026-06-27
CAT326 Copenhagen Airtaxi 7 2026-06-26
CAT325 - 7 2026-06-26
CAT762 - 6 2026-07-14
CAT673 - 6 2026-07-11
CAT743 - 5 2026-06-29
CAT741 - 5 2026-06-29
CAT674 - 5 2026-07-11
CAT335 Copenhagen Airtaxi 5 2026-06-27
CAT772 - 4 2026-07-13
CAT771 - 4 2026-07-13
CAT744 - 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CAT678 - Jul 17, 18:15 UTCJul 17, 21:39 UTC3h 25m
2026-07-17 CAT677 - Jul 17, 13:35 UTCJul 17, 16:40 UTC3h 5m
2026-07-16 CAT607 - Jul 16, 05:20 UTCJul 16, 16:00 UTC10h 40m
2026-07-15 CAT684 AYT → BLL Jul 15, 08:50 UTCJul 15, 12:25 UTC3h 35m
2026-07-15 CAT683 - Jul 15, 04:15 UTCJul 15, 07:35 UTC3h 20m
2026-07-14 CAT762 - Jul 14, 14:25 UTCJul 14, 17:10 UTC2h 45m
2026-07-14 CAT761 - Jul 14, 06:40 UTCJul 14, 09:45 UTC3h 5m
2026-07-13 CAT732 - Jul 13, 18:30 UTCJul 13, 21:10 UTC2h 40m
2026-07-13 CAT731 - Jul 13, 14:40 UTCJul 13, 17:00 UTC2h 20m
2026-07-13 CAT772 RHO → BLL Jul 13, 09:50 UTCJul 13, 13:15 UTC3h 25m
2026-07-13 CAT771 - Jul 13, 04:50 UTCJul 13, 08:05 UTC3h 15m
2026-07-12 CAT330 - Jul 12, 19:05 UTCJul 12, 22:30 UTC3h 25m
2026-07-12 CAT329 - Jul 12, 14:30 UTCJul 12, 18:01 UTC3h 30m
2026-07-12 CAT734 - Jul 12, 09:50 UTCJul 12, 13:25 UTC3h 35m
2026-07-12 CAT733 BLL → AYT Jul 12, 04:20 UTCJul 12, 07:40 UTC3h 20m
2026-07-11 CAT674 KGS → BLL Jul 11, 11:10 UTCJul 11, 14:30 UTC3h 20m
2026-07-11 CAT673 - Jul 11, 06:20 UTCJul 11, 09:25 UTC3h 5m
2026-07-10 CAT678 - Jul 10, 18:35 UTCJul 10, 22:00 UTC3h 25m
2026-07-10 CAT677 - Jul 10, 13:25 UTCJul 10, 16:35 UTC3h 10m
2026-07-09 CAT608 BLL → BLL Jul 9, 05:15 UTCJul 9, 15:45 UTC10h 30m
2026-07-08 CAT9682 CPH → BLL Jul 8, 19:00 UTCJul 8, 19:30 UTC30m
2026-07-08 CAT682 - Jul 8, 10:05 UTCJul 8, 17:40 UTC7h 35m
2026-07-08 CAT681 - Jul 8, 06:40 UTCJul 8, 10:00 UTC3h 20m
2026-07-07 CAT9748 - Jul 7, 22:40 UTCJul 7, 23:10 UTC30m
2026-07-07 CAT748 - Jul 7, 19:00 UTCJul 7, 21:50 UTC2h 50m
2026-07-07 CAT747 - Jul 7, 15:10 UTCJul 7, 17:40 UTC2h 30m
2026-07-07 CAT9747 - Jul 7, 14:05 UTCJul 7, 14:15 UTC10m
2026-07-07 CAT758 CHQ → BLL Jul 7, 09:15 UTCJul 7, 12:50 UTC3h 35m
2026-07-07 CAT757 - Jul 7, 04:50 UTCJul 7, 07:50 UTC3h 0m
2026-07-06 CAT732 - Jul 6, 18:45 UTCJul 6, 21:30 UTC2h 45m
2026-07-06 CAT731 - Jul 6, 15:15 UTCJul 6, 17:30 UTC2h 15m
2026-07-06 CAT772 RHO → BLL Jul 6, 10:20 UTCJul 6, 14:00 UTC3h 40m
2026-07-06 CAT771 - Jul 6, 04:45 UTCJul 6, 07:55 UTC3h 10m
2026-07-05 CAT330 - Jul 5, 18:55 UTCJul 5, 22:45 UTC3h 50m
2026-07-05 CAT329 - Jul 5, 14:35 UTCJul 5, 17:55 UTC3h 20m
2026-07-05 CAT734 - Jul 5, 09:05 UTCJul 5, 12:55 UTC3h 50m
2026-07-05 CAT733 - Jul 5, 04:30 UTCJul 5, 07:45 UTC3h 15m
2026-07-04 CAT674 - Jul 4, 11:15 UTCJul 4, 14:40 UTC3h 25m
2026-07-04 CAT673 - Jul 4, 06:25 UTCJul 4, 09:25 UTC3h 0m
2026-07-03 CAT678 - Jul 3, 18:40 UTCJul 3, 22:05 UTC3h 25m
2026-07-03 CAT677 - Jul 3, 13:30 UTCJul 3, 16:30 UTC3h 0m
2026-07-03 CAT324 - Jul 3, 09:15 UTCJul 3, 11:55 UTC2h 40m
2026-07-03 CAT323 BLL → PVK Jul 3, 04:55 UTCJul 3, 07:15 UTC2h 20m
2026-07-02 CAT9764 RHO → BLL Jul 2, 18:50 UTCJul 2, 22:20 UTC3h 30m
2026-07-02 CAT763 - Jul 2, 14:20 UTCJul 2, 17:35 UTC3h 15m
2026-07-02 CAT9676 - Jul 2, 07:45 UTCJul 2, 10:20 UTC2h 35m
2026-07-02 CAT675 - Jul 2, 04:10 UTCJul 2, 06:41 UTC2h 31m
2026-07-01 VKG1217 LPA → BLL Jul 1, 13:55 UTCJul 1, 18:45 UTC4h 50m
2026-07-01 VKG1216 - Jul 1, 07:25 UTCJul 1, 11:50 UTC4h 25m
2026-06-30 CAT9748 - Jun 30, 18:35 UTCJun 30, 21:05 UTC2h 30m

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 OY-ASG page for operator, model, and routing details .

Mode-S 458667 frequently asked

What is Mode-S code 458667?
458667 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-ASG.
Where is Mode-S 458667 registered?
Mode-S code 458667 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 458667 broadcasting right now?
No active broadcast right now. Last signal was 55m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 458667, octal 21303147, decimal 4,556,391.
What flights does 458667 operate?
Mode-S 458667 has broadcast 20 distinct callsigns, including CAT734, CAT761, CAT733, CAT330, CAT329.