sensors Mode-S transponder

0C21A7

ICAO 24-bit transponder address · allocated to Suriname

Currently assigned to HP-9805CMP · BOEING 737 MAX 8

Hex
0C21A7
Octal
03020647
Decimal
795,047
Country
SR
Tail
HP-9805CMP
Type
B38M
No current signal · last broadcast 3h ago
Flights observed
102
Distinct callsigns
20
Country
SR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 0C21A7.

Country allocation

The ICAO 24-bit address 0C21A7 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
CMP734 Copa Airlines 9 2026-05-23
CMP723 Copa Airlines 7 2026-05-19
CMP476 Copa Airlines 6 2026-05-14
CMP477 Copa Airlines 5 2026-05-15
CMP113 Copa Airlines 5 2026-05-26
CMP858 Copa Airlines 4 2026-05-07
CMP857 Copa Airlines 4 2026-05-08
CMP765 Copa Airlines 4 2026-05-12
CMP424 Copa Airlines 4 2026-05-29
CMP423 Copa Airlines 3 2026-05-28
CMP326 Copa Airlines 3 2026-05-26
CMP262 Copa Airlines 3 2026-04-28
CMP867 - 2 2026-04-21
CMP863 - 2 2026-05-20
CMP862 Copa Airlines 2 2026-05-21
CMP860 Copa Airlines 2 2026-05-17
CMP708 Copa Airlines 2 2026-05-10
CMP396 Copa Airlines 2 2026-05-27
CMP246 Copa Airlines 2 2026-04-13
CMP239 - 2 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CMP394 TPA → PTY May 29, 19:45 UTCMay 29, 21:55 UTC2h 10m
2026-05-29 CMP424 FLN → PTY May 29, 06:35 UTCMay 29, 17:20 UTC10h 45m
2026-05-29 CMP424 FLN → PTY May 29, 04:40 UTCMay 29, 05:05 UTC25m
2026-05-28 CMP423 YUL → PTY May 28, 16:40 UTCMay 29, 03:00 UTC10h 20m
2026-05-28 CMP315 POS → PTY May 28, 08:05 UTCMay 28, 14:40 UTC6h 35m
2026-05-27 CMP396 SCL → PTY May 27, 11:35 UTCMay 28, 05:20 UTC17h 45m
2026-05-27 CMP396 SCL → PTY May 27, 08:20 UTCMay 27, 08:30 UTC10m
2026-05-26 CMP326 CUN → PTY May 26, 19:40 UTCMay 27, 03:50 UTC8h 10m
2026-05-26 CMP113 PTY → CUN May 26, 16:10 UTCMay 26, 18:05 UTC1h 55m
2026-05-25 CMP113 PTY → CUN May 25, 20:19 UTCMay 26, 18:05 UTC21h 45m
2026-05-25 CMP451 SJU → PTY May 25, 09:50 UTCMay 25, 20:24 UTC10h 35m
2026-05-25 CMP450 PTY → SJU May 25, 01:55 UTCMay 25, 02:10 UTC15m
2026-05-23 CMP734 CNF → PTY May 23, 16:50 UTCMay 24, 09:00 UTC16h 10m
2026-05-23 CMP424 FLN → PTY May 23, 04:35 UTCMay 23, 14:25 UTC9h 50m
2026-05-22 CMP423 YUL → PTY May 22, 21:30 UTCMay 23, 03:00 UTC5h 29m
2026-05-22 CMP423 YUL → PTY May 22, 01:50 UTCMay 23, 01:45 UTC23h 55m
2026-05-22 CMP459 MCO → PTY May 22, 01:05 UTCMay 22, 23:15 UTC22h 10m
2026-05-21 CMP862 PTY → MCO May 21, 00:00 UTCMay 21, 17:45 UTC17h 45m
2026-05-20 CMP862 PTY → MCO May 20, 20:50 UTCMay 21, 17:45 UTC20h 55m
2026-05-20 CMP734 CNF → PTY May 20, 16:40 UTCMay 21, 15:45 UTC23h 5m
2026-05-20 CMP734 CNF → PTY May 20, 14:15 UTCMay 21, 08:45 UTC18h 30m
2026-05-20 CMP863 - May 20, 07:55 UTCMay 21, 05:45 UTC21h 50m
2026-05-20 CMP863 - May 20, 06:45 UTCMay 21, 05:45 UTC23h 0m
2026-05-20 CMP866 PTY → MEX May 20, 03:10 UTCMay 20, 04:00 UTC50m
2026-05-19 CMP723 GDL → PTY May 19, 08:15 UTCMay 20, 02:35 UTC18h 20m
2026-05-19 CMP723 GDL → PTY May 19, 06:55 UTCMay 20, 02:35 UTC19h 40m
2026-05-19 CMP723 GDL → PTY May 19, 03:50 UTCMay 20, 02:35 UTC22h 45m
2026-05-19 CMP723 GDL → PTY May 19, 02:00 UTCMay 20, 01:35 UTC23h 35m
2026-05-18 CMP723 GDL → PTY May 18, 14:55 UTCMay 19, 09:15 UTC18h 19m
2026-05-17 CMP860 PTY → BOG May 17, 19:40 UTCMay 18, 05:10 UTC9h 30m
2026-05-17 CMP415 PTY → BOG May 17, 18:01 UTCMay 17, 18:10 UTC10m
2026-05-17 CMP6140 - May 17, 08:55 UTCMay 17, 09:15 UTC20m
2026-05-15 CMP445 MCO → PTY May 15, 22:20 UTCMay 16, 04:50 UTC6h 30m
2026-05-15 CMP477 DEN → PTY May 15, 05:00 UTCMay 15, 20:10 UTC15h 9m
2026-05-14 CMP476 PTY → DEN May 14, 18:50 UTCMay 14, 23:45 UTC4h 55m
2026-05-13 CMP476 PTY → DEN May 13, 22:45 UTCMay 14, 21:45 UTC23h 0m
2026-05-13 CMP361 GUA → PTY May 13, 16:50 UTCMay 13, 21:10 UTC4h 20m
2026-05-12 CMP765 PTY → CNF May 12, 21:55 UTCMay 13, 14:40 UTC16h 45m
2026-05-12 CMP765 PTY → CNF May 12, 16:25 UTCMay 13, 14:40 UTC22h 15m
2026-05-12 CMP765 PTY → CNF May 12, 14:05 UTCMay 13, 13:45 UTC23h 40m
2026-05-12 CMP765 PTY → CNF May 12, 04:55 UTCMay 13, 00:40 UTC19h 45m
2026-05-11 CMP734 CNF → PTY May 11, 21:50 UTCMay 12, 16:30 UTC18h 40m
2026-05-11 CMP734 CNF → PTY May 11, 15:50 UTCMay 12, 14:10 UTC22h 21m
2026-05-11 CMP357 IAD → PTY May 11, 13:50 UTCMay 12, 05:40 UTC15h 51m
2026-05-10 CMP404 PTY → IAD May 10, 20:35 UTCMay 11, 08:00 UTC11h 26m
2026-05-10 CMP708 PTY → BWI May 10, 15:19 UTCMay 10, 18:45 UTC3h 25m
2026-05-08 CMP821 PTY → POA May 8, 22:55 UTCMay 9, 09:35 UTC10h 40m
2026-05-08 CMP857 MEX → PTY May 8, 08:29 UTCMay 8, 15:20 UTC6h 50m
2026-05-07 CMP858 PTY → MEX May 7, 22:54 UTCMay 8, 06:35 UTC7h 40m
2026-05-07 CMP723 GDL → PTY May 7, 02:00 UTCMay 7, 20:45 UTC18h 45m

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 HP-9805CMP page for operator, model, and routing details .

Mode-S 0C21A7 frequently asked

What is Mode-S code 0C21A7?
0C21A7 is an ICAO 24-bit transponder address. Allocated to Suriname. Assigned to HP-9805CMP.
Where is Mode-S 0C21A7 registered?
Mode-S code 0C21A7 is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21A7 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21A7, octal 03020647, decimal 795,047.
What flights does 0C21A7 operate?
Mode-S 0C21A7 has broadcast 20 distinct callsigns, including CMP734, CMP723, CMP476, CMP477, CMP113.