Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

0C21FB

ICAO 24-bit transponder address · allocated to Suriname

Hex
0C21FB
Octal
03020773
Decimal
795,131
Country
SR
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
166
Distinct callsigns
20
Country
SR
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S 0C21FB.

Country allocation

The ICAO 24-bit address 0C21FB 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 Copa Airlines 11 2026-07-24
CMP9819 Copa Airlines 8 2026-06-28
CMP820 Copa Airlines 8 2026-07-25
CMP745 Copa Airlines 5 2026-07-25
CMP734 - 5 2026-07-13
BOE123 - 5 2026-04-15
CMP9026 - 4 2026-06-29
CMP880 Copa Airlines 4 2026-05-29
CMP765 - 4 2026-07-12
CMP753 - 4 2026-07-10
CMP732 Copa Airlines 4 2026-07-19
CMP479 - 4 2026-07-07
CMP476 - 4 2026-07-08
CMP424 Copa Airlines 4 2026-07-24
CMP404 Copa Airlines 4 2026-06-09
CMP357 Copa Airlines 4 2026-05-30
CMP119 - 4 2026-06-22
CMP626 - 3 2026-07-18
CMP477 - 3 2026-07-09
CMP470 - 3 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CMP105 MGA → PTY Jul 26, 20:20 UTCJul 26, 20:40 UTC20m
2026-07-26 CMP106 PTY → MGA Jul 26, 14:40 UTCJul 26, 18:35 UTC3h 55m
2026-07-25 CMP745 PTY → TUC Jul 25, 18:50 UTCJul 26, 13:05 UTC18h 16m
2026-07-25 CMP745 PTY → TUC Jul 25, 18:35 UTCJul 26, 13:05 UTC18h 31m
2026-07-25 CMP745 PTY → TUC Jul 25, 14:50 UTCJul 26, 13:05 UTC22h 16m
2026-07-25 CMP745 PTY → TUC Jul 25, 10:50 UTCJul 26, 09:45 UTC22h 56m
2026-07-25 CMP745 PTY → TUC Jul 25, 09:05 UTCJul 26, 08:20 UTC23h 16m
2026-07-25 CMP820 POA → PTY Jul 25, 05:50 UTCJul 26, 00:35 UTC18h 45m
2026-07-25 CMP820 POA → PTY Jul 25, 02:50 UTCJul 26, 00:35 UTC21h 45m
2026-07-25 CMP820 POA → PTY Jul 25, 01:55 UTCJul 26, 00:35 UTC22h 40m
2026-07-24 CMP821 PTY → POA Jul 24, 22:50 UTCJul 25, 22:45 UTC23h 55m
2026-07-24 CMP821 PTY → POA Jul 24, 21:25 UTCJul 25, 19:05 UTC21h 40m
2026-07-24 CMP821 PTY → POA Jul 24, 17:15 UTCJul 25, 15:15 UTC22h 0m
2026-07-24 CMP424 FLN → PTY Jul 24, 04:50 UTCJul 24, 14:25 UTC9h 35m
2026-07-23 CMP423 YUL → PTY Jul 23, 13:25 UTCJul 24, 03:35 UTC14h 10m
2026-07-23 CMP423 YUL → PTY Jul 23, 07:20 UTCJul 24, 03:35 UTC20h 15m
2026-07-22 CMP497 PTY → SCL Jul 22, 17:10 UTCJul 22, 23:25 UTC6h 15m
2026-07-22 CMP452 - Jul 22, 15:30 UTCJul 22, 15:50 UTC20m
2026-07-21 CMP736 PTY → JFK Jul 21, 11:30 UTCJul 22, 03:30 UTC16h 0m
2026-07-20 CMP494 - Jul 20, 20:10 UTCJul 21, 01:00 UTC4h 50m
2026-07-20 CMP823 - Jul 20, 14:45 UTCJul 20, 18:35 UTC3h 50m
2026-07-19 CMP732 PTY → SLA Jul 19, 22:45 UTCJul 20, 13:30 UTC14h 45m
2026-07-19 CMP732 PTY → SLA Jul 19, 18:00 UTCJul 20, 13:30 UTC19h 30m
2026-07-19 CMP440 MIA → PTY Jul 19, 16:25 UTCJul 19, 16:40 UTC15m
2026-07-18 CMP626 - Jul 18, 12:20 UTCJul 19, 05:50 UTC17h 30m
2026-07-18 CMP626 - Jul 18, 08:50 UTCJul 19, 05:50 UTC21h 0m
2026-07-18 CMP626 - Jul 18, 08:30 UTCJul 19, 05:50 UTC21h 20m
2026-07-18 CMP625 PTY → POA Jul 18, 05:35 UTCJul 19, 04:15 UTC22h 40m
2026-07-17 CMP625 PTY → POA Jul 17, 22:49 UTCJul 18, 17:20 UTC18h 31m
2026-07-17 CMP709 - Jul 17, 20:55 UTCJul 18, 17:20 UTC20h 26m
2026-07-17 CMP708 - Jul 17, 09:15 UTCJul 17, 18:44 UTC9h 30m
2026-07-17 CMP337 - Jul 17, 06:00 UTCJul 17, 06:40 UTC40m
2026-07-16 CMP143 - Jul 16, 22:05 UTCJul 16, 22:15 UTC10m
2026-07-15 CMP642 - Jul 15, 21:15 UTCJul 16, 14:55 UTC17h 40m
2026-07-15 CMP862 SJO → MCO Jul 15, 00:00 UTCJul 15, 17:50 UTC17h 50m
2026-07-14 CMP820 - Jul 14, 05:50 UTCJul 14, 22:55 UTC17h 4m
2026-07-14 CMP820 - Jul 14, 02:50 UTCJul 14, 22:55 UTC20h 4m
2026-07-14 CMP820 - Jul 14, 01:05 UTCJul 14, 22:55 UTC21h 49m
2026-07-13 CMP820 - Jul 13, 22:50 UTCJul 14, 22:45 UTC23h 54m
2026-07-13 CMP821 - Jul 13, 21:30 UTCJul 14, 18:15 UTC20h 45m
2026-07-13 CMP821 - Jul 13, 16:40 UTCJul 14, 11:00 UTC18h 20m
2026-07-13 CMP821 - Jul 13, 14:20 UTCJul 14, 11:00 UTC20h 40m
2026-07-13 CMP821 - Jul 13, 08:55 UTCJul 14, 06:55 UTC22h 0m
2026-07-13 CMP821 - Jul 13, 06:50 UTCJul 14, 06:45 UTC23h 55m
2026-07-13 CMP821 - Jul 13, 06:05 UTCJul 14, 03:05 UTC21h 0m
2026-07-13 CMP734 - Jul 13, 00:50 UTCJul 13, 23:30 UTC22h 40m
2026-07-12 CMP734 - Jul 12, 22:50 UTCJul 13, 22:05 UTC23h 15m
2026-07-12 CMP734 - Jul 12, 21:25 UTCJul 13, 16:45 UTC19h 20m
2026-07-12 CMP734 - Jul 12, 17:55 UTCJul 13, 16:45 UTC22h 50m
2026-07-12 CMP734 - Jul 12, 13:40 UTCJul 13, 10:30 UTC20h 50m

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 0C21FB frequently asked

What is Mode-S code 0C21FB?
0C21FB is an ICAO 24-bit transponder address. Allocated to Suriname.
Where is Mode-S 0C21FB registered?
Mode-S code 0C21FB is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21FB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21FB, octal 03020773, decimal 795,131.
What flights does 0C21FB operate?
Mode-S 0C21FB has broadcast 20 distinct callsigns, including CMP821, CMP9819, CMP820, CMP745, CMP734.