sensors Mode-S transponder

0C21B6

ICAO 24-bit transponder address · allocated to Suriname

Currently assigned to HP-9808CMP · BOEING 737 MAX 8

Hex
0C21B6
Octal
03020666
Decimal
795,062
Country
SR
Tail
HP-9808CMP
Type
B38M
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
243
Distinct callsigns
20
Country
SR
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 0C21B6.

Country allocation

The ICAO 24-bit address 0C21B6 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
CMP820 Copa Airlines 17 2026-06-07
CMP734 - 10 2026-07-16
CMP366 - 10 2026-07-10
CMP753 Copa Airlines 7 2026-06-09
CMP423 Copa Airlines 7 2026-07-24
CMP765 - 6 2026-07-16
CMP752 - 6 2026-07-12
CMP733 Copa Airlines 6 2026-06-09
CMP312 - 6 2026-07-11
CMP866 Copa Airlines 5 2026-05-23
CMP424 Copa Airlines 5 2026-07-25
CMP195 Copa Airlines 5 2026-06-18
CMP194 - 5 2026-06-17
CMP868 - 4 2026-07-14
CMP821 Copa Airlines 4 2026-06-04
CMP760 - 4 2026-07-13
CMP477 Copa Airlines 4 2026-05-07
CMP456 - 4 2026-06-13
CMP450 - 4 2026-07-14
CMP420 Copa Airlines 4 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CMP416 BOG → PTY Jul 26, 16:55 UTCJul 26, 21:30 UTC4h 35m
2026-07-26 CMP403 IAD → PTY Jul 26, 06:40 UTCJul 26, 14:20 UTC7h 40m
2026-07-25 CMP448 PTY → SDQ Jul 25, 18:40 UTCJul 26, 04:15 UTC9h 35m
2026-07-25 CMP424 FLN → PTY Jul 25, 05:15 UTCJul 25, 16:30 UTC11h 15m
2026-07-24 CMP423 YUL → PTY Jul 24, 10:20 UTCJul 25, 04:00 UTC17h 40m
2026-07-24 CMP423 YUL → PTY Jul 24, 06:55 UTCJul 25, 04:00 UTC21h 5m
2026-07-24 CMP423 YUL → PTY Jul 24, 03:35 UTCJul 25, 03:30 UTC23h 55m
2026-07-24 CMP423 YUL → PTY Jul 24, 03:10 UTCJul 25, 01:30 UTC22h 20m
2026-07-23 CMP204 BSB → PTY Jul 23, 23:55 UTCJul 24, 23:30 UTC23h 35m
2026-07-23 CMP204 BSB → PTY Jul 23, 18:45 UTCJul 24, 17:30 UTC22h 45m
2026-07-23 CMP204 BSB → PTY Jul 23, 15:00 UTCJul 24, 13:30 UTC22h 30m
2026-07-23 CMP204 BSB → PTY Jul 23, 11:35 UTCJul 24, 10:55 UTC23h 20m
2026-07-23 CMP205 PTY → BSB Jul 23, 11:25 UTCJul 24, 07:35 UTC20h 10m
2026-07-23 CMP205 PTY → BSB Jul 23, 04:35 UTCJul 24, 03:30 UTC22h 55m
2026-07-22 CMP771 CUR → PTY Jul 22, 23:55 UTCJul 23, 19:15 UTC19h 20m
2026-07-22 CMP855 - Jul 22, 04:00 UTCJul 22, 22:15 UTC18h 15m
2026-07-21 CMP884 - Jul 21, 01:30 UTCJul 21, 18:50 UTC17h 20m
2026-07-20 CMP764 - Jul 20, 19:10 UTCJul 20, 19:25 UTC15m
2026-07-20 CMP757 - Jul 20, 15:55 UTCJul 20, 16:05 UTC10m
2026-07-20 CMP756 - Jul 20, 14:15 UTCJul 20, 14:25 UTC10m
2026-07-20 CMP424 FLN → PTY Jul 20, 04:40 UTCJul 20, 10:30 UTC5h 50m
2026-07-19 CMP423 - Jul 19, 07:35 UTCJul 20, 03:05 UTC19h 30m
2026-07-18 CMP803 JFK → PTY Jul 18, 14:10 UTCJul 19, 01:10 UTC11h 0m
2026-07-17 CMP808 GUA → JFK Jul 17, 22:29 UTCJul 18, 07:45 UTC9h 16m
2026-07-17 CMP361 GUA → GUA Jul 17, 16:49 UTCJul 17, 21:05 UTC4h 15m
2026-07-16 CMP734 - Jul 16, 21:35 UTCJul 17, 14:50 UTC17h 15m
2026-07-16 CMP734 - Jul 16, 16:15 UTCJul 17, 14:50 UTC22h 35m
2026-07-16 CMP734 - Jul 16, 13:54 UTCJul 17, 10:25 UTC20h 30m
2026-07-16 CMP765 - Jul 16, 09:35 UTCJul 17, 09:04 UTC23h 30m
2026-07-16 CMP149 - Jul 16, 07:30 UTCJul 17, 01:15 UTC17h 45m
2026-07-15 CMP138 - Jul 15, 09:25 UTCJul 16, 00:55 UTC15h 30m
2026-07-14 CMP868 - Jul 14, 20:45 UTCJul 15, 04:20 UTC7h 34m
2026-07-14 CMP867 PTY → MCO Jul 14, 15:55 UTCJul 14, 18:15 UTC2h 20m
2026-07-14 CMP450 - Jul 14, 02:00 UTCJul 14, 02:10 UTC10m
2026-07-13 CMP760 - Jul 13, 18:50 UTCJul 13, 19:35 UTC45m
2026-07-12 CMP752 - Jul 12, 22:00 UTCJul 13, 16:55 UTC18h 55m
2026-07-12 CMP752 - Jul 12, 17:55 UTCJul 13, 16:55 UTC23h 0m
2026-07-12 CMP752 - Jul 12, 17:01 UTCJul 13, 11:10 UTC18h 10m
2026-07-11 CMP122 PTY → CUN Jul 11, 23:15 UTCJul 12, 15:50 UTC16h 35m
2026-07-11 CMP122 PTY → CUN Jul 11, 15:35 UTCJul 12, 15:30 UTC23h 55m
2026-07-11 CMP312 - Jul 11, 13:35 UTCJul 12, 09:00 UTC19h 25m
2026-07-11 CMP312 - Jul 11, 13:05 UTCJul 12, 09:00 UTC19h 55m
2026-07-10 CMP366 - Jul 10, 10:00 UTCJul 11, 02:40 UTC16h 40m
2026-07-10 CMP366 - Jul 10, 05:45 UTCJul 11, 02:40 UTC20h 55m
2026-07-09 CMP705 - Jul 9, 23:35 UTCJul 10, 22:35 UTC23h 0m
2026-07-09 CMP705 - Jul 9, 21:05 UTCJul 10, 10:20 UTC13h 15m
2026-07-09 CMP704 PTY → BOS Jul 9, 04:15 UTCJul 9, 18:30 UTC14h 15m
2026-07-07 CMP433 - Jul 7, 12:50 UTCJul 7, 18:15 UTC5h 25m
2026-07-06 CMP441 - Jul 6, 18:50 UTCJul 7, 02:25 UTC7h 35m
2026-07-06 CMP424 - Jul 6, 04:20 UTCJul 6, 16:55 UTC12h 35m

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-9808CMP page for operator, model, and routing details .

Mode-S 0C21B6 frequently asked

What is Mode-S code 0C21B6?
0C21B6 is an ICAO 24-bit transponder address. Allocated to Suriname. Assigned to HP-9808CMP.
Where is Mode-S 0C21B6 registered?
Mode-S code 0C21B6 is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21B6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21B6, octal 03020666, decimal 795,062.
What flights does 0C21B6 operate?
Mode-S 0C21B6 has broadcast 20 distinct callsigns, including CMP820, CMP734, CMP366, CMP753, CMP423.