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 9h ago
Flights observed
49
Distinct callsigns
20
Country
SR
Last broadcast
9h 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
CMP788 Copa Airlines 5 2026-06-14
CMP821 - 4 2026-06-30
CMP820 - 3 2026-06-30
BOE920 - 3 2026-05-18
CMP897 Copa Airlines 2 2026-06-16
CMP789 Copa Airlines 2 2026-06-17
CMP471 Copa Airlines 2 2026-06-24
CMP470 - 2 2026-06-24
CMP450 - 2 2026-07-03
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
CMP868 - 1 2026-07-03
CMP867 Copa Airlines 1 2026-07-03
CMP862 Copa Airlines 1 2026-06-28
CMP746 - 1 2026-06-17
CMP730 - 1 2026-06-29
CMP722 - 1 2026-06-28
CMP496 - 1 2026-06-25

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-04 CMP396 - Jul 4, 11:50 UTCJul 4, 12:45 UTC55m
2026-07-03 CMP868 - Jul 3, 19:50 UTCJul 4, 03:40 UTC7h 50m
2026-07-03 CMP867 PTY → MCO Jul 3, 09:55 UTCJul 3, 17:30 UTC7h 35m
2026-07-03 CMP450 - Jul 3, 01:55 UTCJul 3, 02:05 UTC10m
2026-06-30 CMP820 - Jun 30, 22:45 UTCJul 1, 09:35 UTC10h 50m
2026-06-30 CMP821 - Jun 30, 10:45 UTCJul 1, 09:00 UTC22h 15m
2026-06-30 CMP451 - Jun 30, 09:45 UTCJun 30, 10:00 UTC15m
2026-06-30 CMP450 - Jun 30, 01:55 UTCJun 30, 02:10 UTC15m
2026-06-29 CMP730 - Jun 29, 09:14 UTCJun 29, 13:19 UTC4h 5m
2026-06-28 CMP722 MCO → JFK Jun 28, 21:30 UTCJun 29, 06:50 UTC9h 20m
2026-06-28 CMP862 PTY → MCO Jun 28, 15:34 UTCJun 28, 18:05 UTC2h 30m
2026-06-26 CMP143 - Jun 26, 22:34 UTCJun 26, 22:44 UTC10m
2026-06-26 CMP142 PTY → SJU Jun 26, 19:45 UTCJun 26, 19:55 UTC10m
2026-06-26 CMP389 GUA → PTY Jun 26, 13:30 UTCJun 26, 14:44 UTC1h 15m
2026-06-25 CMP496 - Jun 25, 14:04 UTCJun 26, 05:05 UTC15h 0m
2026-06-24 CMP471 YYZ → PTY Jun 24, 15:05 UTCJun 25, 14:09 UTC23h 5m
2026-06-24 CMP471 YYZ → PTY Jun 24, 12:34 UTCJun 24, 16:45 UTC4h 10m
2026-06-24 CMP470 - Jun 24, 00:59 UTCJun 24, 05:09 UTC4h 10m
2026-06-23 CMP470 - Jun 23, 09:05 UTCJun 24, 05:09 UTC20h 5m
2026-06-23 CMP820 - Jun 23, 01:35 UTCJun 24, 00:59 UTC23h 25m
2026-06-22 CMP820 - Jun 22, 22:40 UTCJun 23, 09:49 UTC11h 10m
2026-06-22 CMP821 - Jun 22, 09:19 UTCJun 23, 06:39 UTC21h 20m
2026-06-22 CMP821 - Jun 22, 07:04 UTCJun 23, 06:39 UTC23h 35m
2026-06-22 CMP821 - Jun 22, 05:04 UTCJun 23, 02:29 UTC21h 25m
2026-06-22 CMP424 - Jun 22, 04:44 UTCJun 23, 02:29 UTC21h 45m
2026-06-21 CMP423 - Jun 21, 14:24 UTCJun 22, 03:14 UTC12h 50m
2026-06-20 CMP111 GUA → PTY Jun 20, 17:04 UTCJun 21, 16:54 UTC23h 50m
2026-06-20 CMP111 GUA → PTY Jun 20, 16:49 UTCJun 21, 14:30 UTC21h 40m
2026-06-20 CMP102 PTY → GUA Jun 20, 14:29 UTCJun 20, 15:29 UTC1h 0m
2026-06-18 CMP888 SDQ → PTY Jun 18, 16:35 UTCJun 19, 10:39 UTC18h 4m
2026-06-17 CMP746 - Jun 17, 23:45 UTCJun 18, 14:55 UTC15h 10m
2026-06-17 CMP789 COR → PTY Jun 17, 00:55 UTCJun 17, 10:45 UTC9h 50m
2026-06-16 CMP789 COR → PTY Jun 16, 11:55 UTCJun 17, 10:45 UTC22h 51m
2026-06-16 CMP897 ROS → PTY Jun 16, 02:09 UTCJun 17, 01:00 UTC22h 51m
2026-06-15 CMP897 ROS → PTY Jun 15, 20:30 UTCJun 16, 12:35 UTC16h 5m
2026-06-15 CMP480 PTY → STI Jun 15, 18:25 UTCJun 15, 18:35 UTC10m
2026-06-14 CMP788 PTY → COR Jun 14, 16:10 UTCJun 15, 10:55 UTC18h 45m
2026-06-14 CMP788 PTY → COR Jun 14, 10:05 UTCJun 15, 01:35 UTC15h 30m
2026-06-14 CMP788 PTY → COR Jun 14, 01:05 UTCJun 15, 01:00 UTC23h 55m
2026-06-14 CMP788 PTY → COR Jun 14, 00:55 UTCJun 14, 18:40 UTC17h 45m
2026-06-13 CMP788 PTY → COR Jun 13, 19:40 UTCJun 14, 18:40 UTC23h 0m
2026-06-13 CMP407 GUA → PTY Jun 13, 10:40 UTCJun 13, 17:35 UTC6h 55m
2026-06-13 CMP390 - Jun 13, 01:20 UTCJun 13, 01:55 UTC35m
2026-05-28 CMP9820 BFI → SJO May 28, 17:25 UTCMay 29, 00:25 UTC7h 0m
2026-05-18 BOE920 - May 18, 17:10 UTCMay 18, 17:45 UTC35m
2026-05-01 BOE920 - May 1, 22:15 UTCMay 1, 22:40 UTC25m
2026-05-01 BOE920 - May 1, 20:05 UTCMay 1, 21:45 UTC1h 40m
2026-04-28 BOE123 RNT → RNT Apr 28, 15:00 UTCApr 28, 15:35 UTC35m
2026-04-28 BOE123 RNT → RNT Apr 28, 11:40 UTCApr 28, 11:50 UTC10m

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 9h 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 CMP788, CMP821, CMP820, BOE920, CMP897.