Apparatus

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sensors Mode-S transponder

0C21FC

ICAO 24-bit transponder address · allocated to Suriname

Hex
0C21FC
Octal
03020774
Decimal
795,132
Country
SR
No current signal · last broadcast 23d ago
Flights observed
98
Distinct callsigns
20
Country
SR
Last broadcast
23d ago

Last known position

Most recent position reported by Mode-S 0C21FC.

Country allocation

The ICAO 24-bit address 0C21FC falls within the block assigned to Suriname (SR) by ICAO Annex 10, Volume III. Every aircraft registered in Suriname 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
CMP821 - 13 2026-07-15
CMP820 - 6 2026-07-16
CMP788 Copa Airlines 5 2026-06-14
CMP733 - 3 2026-07-16
CMP143 - 3 2026-07-10
CMP142 - 3 2026-07-10
BOE920 - 3 2026-05-18
CMP897 Copa Airlines 2 2026-06-16
CMP891 Copa Airlines 2 2026-07-23
CMP789 Copa Airlines 2 2026-06-17
CMP705 - 2 2026-07-14
CMP471 Copa Airlines 2 2026-06-24
CMP470 - 2 2026-06-24
CMP463 Copa Airlines 2 2026-07-25
CMP450 - 2 2026-07-03
CMP246 - 2 2026-07-09
CMP111 Copa Airlines 2 2026-06-20
BOE123 - 2 2026-04-28
CMP9820 Copa Airlines 1 2026-05-28
CMP888 Copa Airlines 1 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CMP327 PUJ → PTY Jul 26, 09:25 UTCJul 26, 23:00 UTC13h 35m
2026-07-26 CMP712 PTY → MGA Jul 26, 03:35 UTCJul 26, 03:50 UTC15m
2026-07-25 CMP157 MDE → PTY Jul 25, 23:40 UTCJul 25, 23:50 UTC10m
2026-07-25 CMP129 - Jul 25, 17:10 UTCJul 25, 21:40 UTC4h 30m
2026-07-25 CMP463 PTY → COR Jul 25, 10:25 UTCJul 25, 15:10 UTC4h 45m
2026-07-24 CMP200 PTY → PEI Jul 24, 20:25 UTCJul 25, 01:20 UTC4h 55m
2026-07-24 CMP160 - Jul 24, 14:50 UTCJul 24, 15:10 UTC20m
2026-07-23 CMP891 ATL → PTY Jul 23, 22:05 UTCJul 24, 13:35 UTC15h 30m
2026-07-23 CMP880 - Jul 23, 10:50 UTCJul 23, 20:05 UTC9h 15m
2026-07-22 CMP236 - Jul 22, 13:15 UTCJul 22, 23:55 UTC10h 40m
2026-07-22 CMP115 SJO → PTY Jul 22, 00:30 UTCJul 22, 04:25 UTC3h 55m
2026-07-21 CMP116 PTY → SJO Jul 21, 23:15 UTCJul 21, 23:30 UTC15m
2026-07-20 CMP626 - Jul 20, 23:10 UTCJul 21, 17:40 UTC18h 29m
2026-07-20 CMP891 ATL → PTY Jul 20, 21:30 UTCJul 21, 17:40 UTC20h 9m
2026-07-20 CMP253 - Jul 20, 07:50 UTCJul 20, 19:20 UTC11h 30m
2026-07-19 CMP456 PTY → LAS Jul 19, 13:10 UTCJul 20, 05:35 UTC16h 25m
2026-07-18 CMP366 PTY → BOS Jul 18, 14:50 UTCJul 19, 02:40 UTC11h 50m
2026-07-16 CMP733 - Jul 16, 22:49 UTCJul 17, 13:45 UTC14h 55m
2026-07-16 CMP733 - Jul 16, 18:15 UTCJul 17, 13:45 UTC19h 30m
2026-07-16 CMP733 - Jul 16, 15:49 UTCJul 17, 13:45 UTC21h 55m
2026-07-16 CMP820 - Jul 16, 05:40 UTCJul 17, 00:30 UTC18h 50m
2026-07-16 CMP820 - Jul 16, 01:55 UTCJul 17, 00:30 UTC22h 35m
2026-07-15 CMP820 - Jul 15, 23:05 UTCJul 16, 22:49 UTC23h 45m
2026-07-15 CMP821 - Jul 15, 21:45 UTCJul 16, 18:19 UTC20h 35m
2026-07-15 CMP821 - Jul 15, 17:05 UTCJul 16, 15:49 UTC22h 45m
2026-07-15 CMP821 - Jul 15, 16:50 UTCJul 16, 10:59 UTC18h 10m
2026-07-15 CMP821 - Jul 15, 13:15 UTCJul 16, 10:59 UTC21h 45m
2026-07-15 CMP821 - Jul 15, 07:45 UTCJul 16, 06:40 UTC22h 55m
2026-07-15 CMP821 - Jul 15, 05:45 UTCJul 16, 02:55 UTC21h 10m
2026-07-15 CMP821 - Jul 15, 04:35 UTCJul 16, 02:55 UTC22h 20m
2026-07-14 CMP769 - Jul 14, 23:05 UTCJul 15, 23:00 UTC23h 55m
2026-07-14 CMP705 - Jul 14, 21:05 UTCJul 15, 17:20 UTC20h 14m
2026-07-14 CMP705 - Jul 14, 20:15 UTCJul 15, 17:20 UTC21h 4m
2026-07-14 CMP704 PTY → BOS Jul 14, 08:10 UTCJul 14, 18:05 UTC9h 55m
2026-07-14 CMP252 - Jul 14, 04:50 UTCJul 14, 05:10 UTC20m
2026-07-13 CMP269 - Jul 13, 17:10 UTCJul 14, 03:20 UTC10h 10m
2026-07-12 CMP821 - Jul 12, 21:20 UTCJul 13, 15:25 UTC18h 5m
2026-07-12 CMP821 - Jul 12, 17:10 UTCJul 13, 15:25 UTC22h 15m
2026-07-12 CMP463 PTY → COR Jul 12, 15:01 UTCJul 12, 15:10 UTC10m
2026-07-10 CMP143 - Jul 10, 22:30 UTCJul 10, 22:40 UTC10m
2026-07-10 CMP142 - Jul 10, 19:50 UTCJul 10, 20:00 UTC10m
2026-07-09 CMP246 - Jul 9, 12:25 UTCJul 9, 12:40 UTC15m
2026-07-09 CMP246 - Jul 9, 10:40 UTCJul 9, 11:05 UTC25m
2026-07-09 CMP427 - Jul 9, 01:55 UTCJul 9, 02:25 UTC30m
2026-07-08 CMP298 - Jul 8, 16:55 UTCJul 8, 17:05 UTC10m
2026-07-05 CMP440 MIA → PTY Jul 5, 16:35 UTCJul 5, 16:50 UTC15m
2026-07-05 CMP432 - Jul 5, 05:00 UTCJul 5, 05:20 UTC20m
2026-07-04 CMP143 - Jul 4, 22:40 UTCJul 4, 22:50 UTC10m
2026-07-04 CMP142 - Jul 4, 20:10 UTCJul 4, 20:20 UTC10m
2026-07-04 CMP396 - Jul 4, 11:50 UTCJul 4, 12:45 UTC55m

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.

Mode-S 0C21FC frequently asked

What is Mode-S code 0C21FC?
0C21FC is an ICAO 24-bit transponder address. Allocated to Suriname.
Where is Mode-S 0C21FC registered?
Mode-S code 0C21FC is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21FC broadcasting right now?
No active broadcast right now. Last signal was 23d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21FC, octal 03020774, decimal 795,132.
What flights does 0C21FC operate?
Mode-S 0C21FC has broadcast 20 distinct callsigns, including CMP821, CMP820, CMP788, CMP733, CMP143.