Apparatus

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sensors Mode-S transponder

3C4B28

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYH · BOEING 747-8

Hex
3C4B28
Octal
17045450
Decimal
3,951,400
Country
DE
Tail
D-ABYH
Type
B748
Broadcasting now · callsign DLH455 · 35,000 ft
Flights observed
144
Distinct callsigns
20
Country
DE
Last broadcast
Jul 26, 22:00 UTC

Current position

3C4B28 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C4B28 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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
DLH499 - 12 2026-07-12
DLH431 Lufthansa 12 2026-07-20
DLH430 - 12 2026-07-20
DLH507 - 11 2026-07-13
DLH498 - 11 2026-07-11
DLH462 - 11 2026-07-19
DLH506 - 10 2026-07-12
DLH463 Lufthansa 9 2026-07-19
DLH457 Lufthansa 9 2026-07-21
DLH456 - 9 2026-07-21
DLH572 Lufthansa 5 2026-07-26
DLH403 Lufthansa 5 2026-07-22
DLH402 Lufthansa 5 2026-07-22
DLH573 Lufthansa 4 2026-06-19
DLH7K - 3 2026-07-14
DLH455 - 3 2026-06-27
DLH454 Lufthansa 3 2026-06-27
DLH423 - 3 2026-07-14
DLH510 Lufthansa 2 2026-05-03
DLH781 Lufthansa 1 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DLH572 FRA → JNB Jul 26, 20:35 UTCJul 26, 22:00 UTC1h 25m
2026-07-22 DLH403 EWR → FRA Jul 22, 22:55 UTCJul 23, 05:35 UTC6h 40m
2026-07-22 DLH402 FRA → EWR Jul 22, 12:10 UTCJul 22, 20:05 UTC7h 55m
2026-07-21 DLH457 LAX → FRA Jul 21, 23:00 UTCJul 22, 02:20 UTC3h 20m
2026-07-21 DLH456 FRA → LAX Jul 21, 09:35 UTCJul 21, 20:25 UTC10h 50m
2026-07-20 DLH431 ORD → FRA Jul 20, 22:35 UTCJul 21, 06:05 UTC7h 29m
2026-07-20 DLH430 FRA → ORD Jul 20, 10:20 UTCJul 20, 18:40 UTC8h 20m
2026-07-19 DLH463 MIA → FRA Jul 19, 21:30 UTCJul 20, 06:25 UTC8h 55m
2026-07-19 DLH462 - Jul 19, 09:25 UTCJul 19, 18:20 UTC8h 55m
2026-07-18 DLH463 MIA → FRA Jul 18, 21:35 UTCJul 19, 06:10 UTC8h 35m
2026-07-18 DLH462 - Jul 18, 09:25 UTCJul 18, 18:35 UTC9h 10m
2026-07-17 DLH431 - Jul 17, 22:10 UTCJul 18, 05:45 UTC7h 36m
2026-07-17 DLH430 FRA → ORD Jul 17, 09:30 UTCJul 17, 17:44 UTC8h 15m
2026-07-15 DLH431 - Jul 15, 22:15 UTCJul 16, 06:00 UTC7h 45m
2026-07-15 DLH430 FRA → ORD Jul 15, 09:45 UTCJul 15, 17:55 UTC8h 10m
2026-07-14 DLH423 BOS → FRA Jul 14, 23:00 UTCJul 15, 05:40 UTC6h 40m
2026-07-14 DLH7K - Jul 14, 12:10 UTCJul 14, 19:10 UTC7h 0m
2026-07-13 DLH507 - Jul 13, 21:30 UTCJul 14, 08:00 UTC10h 30m
2026-07-12 DLH506 - Jul 12, 20:35 UTCJul 13, 08:05 UTC11h 30m
2026-07-12 DLH499 - Jul 12, 03:10 UTCJul 12, 13:20 UTC10h 10m
2026-07-11 DLH498 FRA → MEX Jul 11, 12:20 UTCJul 12, 00:10 UTC11h 50m
2026-07-10 DLH463 - Jul 10, 21:30 UTCJul 11, 06:01 UTC8h 30m
2026-07-10 DLH462 - Jul 10, 09:25 UTCJul 10, 18:45 UTC9h 20m
2026-07-09 DLH457 - Jul 9, 02:30 UTCJul 9, 12:35 UTC10h 5m
2026-07-08 DLH456 - Jul 8, 20:30 UTCJul 8, 23:45 UTC3h 15m
2026-07-08 DLH456 FRA → LAX Jul 8, 15:45 UTCJul 8, 16:00 UTC15m
2026-07-08 DLH456 FRA → LAX Jul 8, 09:20 UTCJul 8, 13:25 UTC4h 5m
2026-07-07 DLH423 - Jul 7, 22:30 UTCJul 8, 05:00 UTC6h 30m
2026-07-07 DLH7K FRA → BOS Jul 7, 11:55 UTCJul 7, 19:15 UTC7h 20m
2026-07-06 DLH507 - Jul 6, 22:40 UTCJul 7, 08:35 UTC9h 55m
2026-07-06 DLH507 - Jul 6, 21:35 UTCJul 6, 21:50 UTC15m
2026-07-05 DLH506 FRA → GRU Jul 5, 20:50 UTCJul 6, 07:55 UTC11h 5m
2026-07-04 DLH431 ORD → FRA Jul 4, 22:10 UTCJul 5, 05:25 UTC7h 15m
2026-07-04 DLH430 FRA → ORD Jul 4, 09:55 UTCJul 4, 18:35 UTC8h 40m
2026-07-03 DLH431 - Jul 3, 23:15 UTCJul 4, 06:30 UTC7h 15m
2026-07-03 DLH430 FRA → ORD Jul 3, 09:20 UTCJul 3, 18:20 UTC9h 0m
2026-07-02 DLH431 - Jul 2, 22:10 UTCJul 3, 05:20 UTC7h 10m
2026-07-02 DLH430 FRA → ORD Jul 2, 09:50 UTCJul 2, 18:25 UTC8h 35m
2026-07-01 DLH499 MEX → FRA Jul 1, 03:00 UTCJul 1, 13:00 UTC10h 0m
2026-06-30 DLH498 FRA → MEX Jun 30, 12:25 UTCJun 30, 23:45 UTC11h 20m
2026-06-29 DLH507 - Jun 29, 21:34 UTCJun 30, 08:15 UTC10h 41m
2026-06-28 DLH506 FRA → GRU Jun 28, 20:54 UTCJun 29, 08:09 UTC11h 15m
2026-06-27 DLH455 SFO → FRA Jun 27, 23:04 UTCJun 28, 09:15 UTC10h 10m
2026-06-27 DLH454 FRA → SFO Jun 27, 10:05 UTCJun 27, 20:34 UTC10h 30m
2026-06-25 DLH457 - Jun 25, 22:39 UTCJun 26, 08:54 UTC10h 15m
2026-06-25 DLH456 FRA → LAX Jun 25, 09:40 UTCJun 25, 20:25 UTC10h 45m
2026-06-24 DLH431 ORD → FRA Jun 24, 22:25 UTCJun 25, 05:50 UTC7h 25m
2026-06-24 DLH430 FRA → ORD Jun 24, 09:24 UTCJun 24, 17:55 UTC8h 30m
2026-06-23 DLH431 ORD → FRA Jun 23, 22:19 UTCJun 24, 05:40 UTC7h 20m
2026-06-23 DLH430 FRA → ORD Jun 23, 10:04 UTCJun 23, 18:25 UTC8h 20m

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 D-ABYH page for operator, model, and routing details .

Mode-S 3C4B28 frequently asked

What is Mode-S code 3C4B28?
3C4B28 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYH.
Where is Mode-S 3C4B28 registered?
Mode-S code 3C4B28 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B28 broadcasting right now?
Yes. Mode-S 3C4B28 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B28, octal 17045450, decimal 3,951,400.
What flights does 3C4B28 operate?
Mode-S 3C4B28 has broadcast 20 distinct callsigns, including DLH499, DLH431, DLH430, DLH507, DLH498.