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sensors Mode-S transponder

0C4155

ICAO 24-bit transponder address · allocated to Dominican Republic

Currently assigned to HI1055 · GULFSTREAM 4

Hex
0C4155
Octal
03040525
Decimal
803,157
Country
DO
Tail
HI1055
Type
GLF4
No current signal · last broadcast 1d ago
Flights observed
70
Distinct callsigns
2
Country
DO
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 0C4155.

Country allocation

The ICAO 24-bit address 0C4155 falls within the block assigned to Dominican Republic (DO) by ICAO Annex 10, Volume III. Every aircraft registered in Dominican Republic 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 2 distinct

Callsign Airline Flights Last seen
HI1055 - 69 2026-07-20
AJS004 - 1 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 HI1055 - Jul 20, 18:05 UTCJul 20, 19:20 UTC1h 15m
2026-07-20 HI1055 - Jul 20, 02:50 UTCJul 20, 15:35 UTC12h 45m
2026-07-19 HI1055 - Jul 19, 15:10 UTCJul 19, 16:00 UTC50m
2026-07-16 HI1055 - Jul 16, 23:20 UTCJul 17, 22:45 UTC23h 25m
2026-07-16 HI1055 - Jul 16, 22:49 UTCJul 17, 02:20 UTC3h 30m
2026-07-15 HI1055 - Jul 15, 19:00 UTCJul 15, 21:35 UTC2h 35m
2026-07-14 HI1055 - Jul 14, 15:55 UTCJul 14, 16:25 UTC30m
2026-07-14 HI1055 - Jul 14, 14:10 UTCJul 14, 14:30 UTC20m
2026-07-14 HI1055 - Jul 14, 12:40 UTCJul 14, 13:30 UTC50m
2026-07-13 HI1055 - Jul 13, 02:40 UTCJul 13, 20:10 UTC17h 30m
2026-07-13 HI1055 - Jul 13, 00:50 UTCJul 13, 01:20 UTC30m
2026-07-11 HI1055 - Jul 11, 04:01 UTCJul 11, 04:10 UTC10m
2026-07-10 HI1055 - Jul 10, 21:55 UTCJul 11, 00:30 UTC2h 35m
2026-07-05 HI1055 - Jul 5, 11:30 UTCJul 5, 16:00 UTC4h 30m
2026-07-04 HI1055 - Jul 4, 04:20 UTCJul 4, 09:30 UTC5h 10m
2026-07-03 HI1055 - Jul 3, 19:15 UTCJul 3, 19:45 UTC30m
2026-07-02 HI1055 - Jul 2, 19:10 UTCJul 2, 23:00 UTC3h 50m
2026-07-02 HI1055 - Jul 2, 14:15 UTCJul 2, 14:45 UTC30m
2026-07-01 HI1055 - Jul 1, 22:50 UTCJul 2, 00:10 UTC1h 20m
2026-06-30 HI1055 - Jun 30, 18:25 UTCJun 30, 20:15 UTC1h 50m
2026-06-30 HI1055 - Jun 30, 15:20 UTCJun 30, 15:40 UTC20m
2026-06-28 HI1055 - Jun 28, 21:59 UTCJun 28, 23:29 UTC1h 30m
2026-06-28 HI1055 - Jun 28, 18:25 UTCJun 28, 19:55 UTC1h 30m
2026-06-27 HI1055 - Jun 27, 20:34 UTCJun 27, 23:10 UTC2h 35m
2026-06-26 HI1055 - Jun 26, 16:35 UTCJun 26, 19:24 UTC2h 50m
2026-06-25 HI1055 - Jun 25, 18:55 UTCJun 25, 23:39 UTC4h 45m
2026-06-24 HI1055 - Jun 24, 13:40 UTCJun 24, 19:04 UTC5h 25m
2026-06-23 HI1055 - Jun 23, 22:40 UTCJun 23, 23:10 UTC30m
2026-06-21 AJS004 - Jun 21, 18:39 UTCJun 21, 18:50 UTC10m
2026-06-21 HI1055 - Jun 21, 00:55 UTCJun 21, 12:44 UTC11h 50m
2026-06-19 HI1055 - Jun 19, 15:34 UTCJun 19, 16:14 UTC40m
2026-06-19 HI1055 - Jun 19, 13:24 UTCJun 19, 13:54 UTC30m
2026-06-18 HI1055 - Jun 18, 21:55 UTCJun 19, 00:29 UTC2h 34m
2026-06-14 HI1055 - Jun 14, 20:30 UTCJun 14, 22:35 UTC2h 5m
2026-06-14 HI1055 - Jun 14, 17:15 UTCJun 14, 19:05 UTC1h 50m
2026-06-14 HI1055 - Jun 14, 14:35 UTCJun 14, 14:55 UTC20m
2026-06-14 HI1055 - Jun 14, 00:30 UTCJun 14, 02:50 UTC2h 20m
2026-06-12 HI1055 - Jun 12, 04:50 UTCJun 12, 05:40 UTC50m
2026-06-11 HI1055 - Jun 11, 22:50 UTCJun 12, 03:15 UTC4h 25m
2026-06-10 HI1055 - Jun 10, 19:20 UTCJun 10, 22:10 UTC2h 50m
2026-06-08 HI1055 - Jun 8, 21:30 UTCJun 9, 15:50 UTC18h 20m
2026-06-08 HI1055 - Jun 8, 20:10 UTCJun 9, 15:50 UTC19h 40m
2026-06-07 HI1055 - Jun 7, 19:30 UTCJun 7, 20:15 UTC45m
2026-06-07 HI1055 - Jun 7, 15:50 UTCJun 7, 16:35 UTC45m
2026-06-07 HI1055 - Jun 7, 12:25 UTCJun 7, 14:05 UTC1h 40m
2026-06-05 HI1055 - Jun 5, 01:55 UTCJun 5, 19:00 UTC17h 5m
2026-06-04 HI1055 - Jun 4, 15:05 UTCJun 4, 15:35 UTC30m
2026-06-04 HI1055 - Jun 4, 13:15 UTCJun 4, 13:45 UTC30m
2026-06-03 HI1055 SFO → MLB Jun 3, 17:05 UTCJun 3, 22:05 UTC5h 0m
2026-06-01 HI1055 - Jun 1, 16:30 UTCJun 2, 00:25 UTC7h 55m

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 HI1055 page for operator, model, and routing details .

Mode-S 0C4155 frequently asked

What is Mode-S code 0C4155?
0C4155 is an ICAO 24-bit transponder address. Allocated to Dominican Republic. Assigned to HI1055.
Where is Mode-S 0C4155 registered?
Mode-S code 0C4155 is allocated to Dominican Republic (DO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C4155 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C4155, octal 03040525, decimal 803,157.
What flights does 0C4155 operate?
Mode-S 0C4155 has broadcast 2 distinct callsigns, including HI1055, AJS004.