Apparatus

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sensors Mode-S transponder

3C4B2D

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ABYM · BOEING 747-8

Hex
3C4B2D
Octal
17045455
Decimal
3,951,405
Country
DE
Tail
D-ABYM
Type
B748
Broadcasting now · callsign DLH510 · 36,000 ft
Flights observed
118
Distinct callsigns
20
Country
DE
Last broadcast
18m ago

Current position

3C4B2D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3C4B2D 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
DLH716 - 13 2026-07-08
DLH511 Lufthansa 13 2026-07-05
DLH717 - 12 2026-07-09
DLH510 - 12 2026-07-13
DLH499 - 9 2026-07-13
DLH507 - 7 2026-06-18
DLH506 Lufthansa 6 2026-06-17
DLH498 - 6 2026-07-12
DLH573 Lufthansa 5 2026-07-02
DLH572 - 5 2026-07-01
DLH455 - 5 2026-07-10
DLH454 - 5 2026-07-10
DLH7K - 2 2026-07-11
DLH463 - 2 2026-07-07
DLH462 Lufthansa 2 2026-07-07
DLH430 Lufthansa 2 2026-06-11
DLH423 - 2 2026-07-11
DLH403 - 2 2026-07-06
DLH402 - 2 2026-07-06
DLH781 Lufthansa 1 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DLH510 - Jul 13, 20:10 UTCJul 14, 05:15 UTC9h 5m
2026-07-13 DLH499 - Jul 13, 03:40 UTCJul 13, 13:20 UTC9h 40m
2026-07-13 DLH499 - Jul 13, 02:50 UTCJul 13, 03:05 UTC15m
2026-07-12 DLH498 - Jul 12, 12:15 UTCJul 12, 23:40 UTC11h 25m
2026-07-11 DLH423 - Jul 11, 22:30 UTCJul 12, 04:45 UTC6h 15m
2026-07-11 DLH7K FRA → BOS Jul 11, 12:05 UTCJul 11, 19:25 UTC7h 20m
2026-07-10 DLH455 SFO → FRA Jul 10, 23:05 UTCJul 11, 08:50 UTC9h 45m
2026-07-10 DLH454 - Jul 10, 09:30 UTCJul 10, 20:30 UTC11h 0m
2026-07-09 DLH717 HND → FRA Jul 9, 03:15 UTCJul 9, 16:45 UTC13h 30m
2026-07-08 DLH716 FRA → HND Jul 8, 12:55 UTCJul 9, 00:45 UTC11h 50m
2026-07-07 DLH463 - Jul 7, 21:15 UTCJul 8, 05:40 UTC8h 25m
2026-07-07 DLH462 FRA → MIA Jul 7, 09:25 UTCJul 7, 18:45 UTC9h 20m
2026-07-06 DLH403 EWR → FRA Jul 6, 22:45 UTCJul 7, 05:15 UTC6h 30m
2026-07-06 DLH402 FRA → EWR Jul 6, 12:10 UTCJul 6, 20:00 UTC7h 50m
2026-07-05 DLH511 EZE → FRA Jul 5, 19:45 UTCJul 6, 08:10 UTC12h 25m
2026-07-05 DLH510 - Jul 5, 10:30 UTCJul 5, 11:45 UTC1h 15m
2026-07-04 DLH510 - Jul 4, 20:15 UTCJul 5, 08:30 UTC12h 15m
2026-07-02 DLH573 JNB → FRA Jul 2, 17:35 UTCJul 3, 03:30 UTC9h 55m
2026-07-01 DLH572 - Jul 1, 20:55 UTCJul 2, 06:41 UTC9h 46m
2026-06-30 DLH717 HND → FRA Jun 30, 03:30 UTCJun 30, 16:55 UTC13h 25m
2026-06-29 DLH716 FRA → HND Jun 29, 12:49 UTCJun 30, 00:45 UTC11h 55m
2026-06-28 DLH573 JNB → FRA Jun 28, 17:25 UTCJun 29, 03:39 UTC10h 15m
2026-06-27 DLH572 - Jun 27, 20:55 UTCJun 28, 06:24 UTC9h 30m
2026-06-26 DLH457 - Jun 26, 23:00 UTCJun 27, 09:15 UTC10h 15m
2026-06-26 DLH456 FRA → LAX Jun 26, 09:39 UTCJun 26, 20:34 UTC10h 55m
2026-06-25 DLH423 - Jun 25, 22:45 UTCJun 26, 04:55 UTC6h 10m
2026-06-25 DLH7K FRA → BOS Jun 25, 12:30 UTCJun 25, 19:59 UTC7h 30m
2026-06-24 DLH455 SFO → FRA Jun 24, 22:10 UTCJun 25, 08:20 UTC10h 10m
2026-06-24 DLH454 FRA → SFO Jun 24, 08:55 UTCJun 24, 19:29 UTC10h 35m
2026-06-22 DLH511 EZE → FRA Jun 22, 19:44 UTCJun 23, 08:35 UTC12h 50m
2026-06-21 DLH510 FRA → EZE Jun 21, 20:24 UTCJun 22, 09:30 UTC13h 5m
2026-06-20 DLH511 EZE → FRA Jun 20, 19:55 UTCJun 21, 08:30 UTC12h 35m
2026-06-19 DLH510 FRA → EZE Jun 19, 20:24 UTCJun 20, 09:14 UTC12h 50m
2026-06-18 DLH507 - Jun 18, 22:10 UTCJun 19, 08:59 UTC10h 49m
2026-06-17 DLH506 FRA → GRU Jun 17, 20:50 UTCJun 18, 08:00 UTC11h 10m
2026-06-17 DLH717 HND → FRA Jun 17, 03:10 UTCJun 17, 16:30 UTC13h 20m
2026-06-16 DLH716 FRA → HND Jun 16, 12:39 UTCJun 17, 00:40 UTC12h 1m
2026-06-15 DLH403 EWR → FRA Jun 15, 22:45 UTCJun 16, 05:20 UTC6h 35m
2026-06-15 DLH402 FRA → EWR Jun 15, 12:19 UTCJun 15, 20:20 UTC8h 0m
2026-06-14 DLH455 SFO → FRA Jun 14, 22:20 UTCJun 15, 08:35 UTC10h 15m
2026-06-14 DLH454 FRA → SFO Jun 14, 09:00 UTCJun 14, 19:40 UTC10h 40m
2026-06-13 DLH781 SIN → FRA Jun 13, 16:05 UTCJun 14, 04:20 UTC12h 15m
2026-06-12 DLH780 FRA → SIN Jun 12, 20:50 UTCJun 13, 08:10 UTC11h 19m
2026-06-12 DLH431 ORD → FRA Jun 12, 02:05 UTCJun 12, 09:20 UTC7h 15m
2026-06-11 DLH430 FRA → ORD Jun 11, 20:00 UTCJun 11, 20:50 UTC50m
2026-06-11 DLH430 FRA → ORD Jun 11, 09:30 UTCJun 11, 18:30 UTC9h 0m
2026-06-10 DLH573 JNB → FRA Jun 10, 17:20 UTCJun 11, 03:20 UTC10h 0m
2026-06-09 DLH572 FRA → JNB Jun 9, 20:30 UTCJun 10, 06:10 UTC9h 40m
2026-06-07 DLH511 EZE → FRA Jun 7, 23:10 UTCJun 8, 08:05 UTC8h 55m
2026-06-07 DLH511 EZE → FRA Jun 7, 19:45 UTCJun 7, 20:10 UTC25m

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

Mode-S 3C4B2D frequently asked

What is Mode-S code 3C4B2D?
3C4B2D is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ABYM.
Where is Mode-S 3C4B2D registered?
Mode-S code 3C4B2D is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4B2D broadcasting right now?
Yes. Mode-S 3C4B2D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4B2D, octal 17045455, decimal 3,951,405.
What flights does 3C4B2D operate?
Mode-S 3C4B2D has broadcast 20 distinct callsigns, including DLH716, DLH511, DLH717, DLH510, DLH499.