Apparatus

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sensors Mode-S transponder

0C21B7

ICAO 24-bit transponder address · allocated to Suriname

Currently assigned to HP-9809CMP · BOEING 737 MAX 8

Hex
0C21B7
Octal
03020667
Decimal
795,063
Country
SR
Tail
HP-9809CMP
Type
B38M
No current signal · last broadcast Jul 26, 15:00 UTC
Flights observed
262
Distinct callsigns
20
Country
SR
Last broadcast
Jul 26, 15:00 UTC

Last known position

Most recent position reported by Mode-S 0C21B7.

Country allocation

The ICAO 24-bit address 0C21B7 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
CMP752 Copa Airlines 20 2026-07-22
CMP820 Copa Airlines 11 2026-04-29
CMP753 Copa Airlines 10 2026-07-23
CMP456 - 9 2026-07-09
CMP316 - 9 2026-07-21
CMP734 - 8 2026-07-05
CMP732 Copa Airlines 7 2026-07-21
CMP424 Copa Airlines 7 2026-07-18
CMP421 - 7 2026-07-16
CMP857 Copa Airlines 6 2026-05-26
CMP709 Copa Airlines 6 2026-05-25
CMP205 - 6 2026-07-12
CMP708 Copa Airlines 5 2026-05-25
CMP423 - 5 2026-07-17
CMP317 - 5 2026-07-04
CMP253 - 5 2026-07-10
CMP194 Copa Airlines 5 2026-06-11
CMP821 Copa Airlines 4 2026-04-29
CMP446 - 4 2026-07-09
CMP804 - 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CMP729 PUJ → PTY Jul 25, 22:15 UTCJul 26, 14:55 UTC16h 41m
2026-07-25 CMP131 PTY → LIM Jul 25, 19:25 UTCJul 25, 20:10 UTC45m
2026-07-25 CMP763 - Jul 25, 14:30 UTCJul 25, 14:40 UTC10m
2026-07-25 CMP477 DEN → PTY Jul 25, 05:00 UTCJul 25, 13:10 UTC8h 10m
2026-07-24 CMP476 PTY → DEN Jul 24, 19:00 UTCJul 24, 23:45 UTC4h 45m
2026-07-23 CMP753 SSA → PTY Jul 23, 05:20 UTCJul 23, 23:35 UTC18h 15m
2026-07-23 CMP753 SSA → PTY Jul 23, 01:25 UTCJul 23, 23:35 UTC22h 10m
2026-07-22 CMP752 PTY → SSA Jul 22, 21:50 UTCJul 23, 19:15 UTC21h 25m
2026-07-22 CMP752 PTY → SSA Jul 22, 21:35 UTCJul 23, 19:15 UTC21h 40m
2026-07-22 CMP752 PTY → SSA Jul 22, 16:05 UTCJul 23, 15:20 UTC23h 15m
2026-07-21 CMP316 - Jul 21, 23:30 UTCJul 22, 14:30 UTC15h 0m
2026-07-21 CMP316 - Jul 21, 17:55 UTCJul 22, 14:30 UTC20h 35m
2026-07-21 CMP732 PTY → SLA Jul 21, 14:00 UTCJul 22, 13:45 UTC23h 45m
2026-07-21 CMP732 PTY → SLA Jul 21, 10:15 UTCJul 22, 01:15 UTC15h 0m
2026-07-20 CMP806 MCO → SJO Jul 20, 18:15 UTCJul 21, 00:15 UTC6h 0m
2026-07-20 CMP805 PTY → MCO Jul 20, 08:10 UTCJul 20, 15:55 UTC7h 45m
2026-07-20 CMP314 PTY → POS Jul 20, 03:35 UTCJul 20, 05:25 UTC1h 50m
2026-07-19 CMP315 POS → PTY Jul 19, 07:50 UTCJul 19, 09:45 UTC1h 55m
2026-07-18 CMP314 PTY → POS Jul 18, 10:15 UTCJul 19, 05:20 UTC19h 5m
2026-07-18 CMP424 FLN → PTY Jul 18, 09:10 UTCJul 19, 05:20 UTC20h 10m
2026-07-18 CMP424 FLN → PTY Jul 18, 06:40 UTCJul 19, 05:20 UTC22h 40m
2026-07-18 CMP424 FLN → PTY Jul 18, 04:50 UTCJul 19, 03:45 UTC22h 55m
2026-07-17 CMP423 - Jul 17, 16:29 UTCJul 18, 03:15 UTC10h 46m
2026-07-16 CMP432 - Jul 16, 22:15 UTCJul 17, 05:35 UTC7h 20m
2026-07-16 CMP421 - Jul 16, 08:05 UTCJul 16, 20:19 UTC12h 15m
2026-07-15 CMP420 - Jul 15, 21:50 UTCJul 16, 20:19 UTC22h 30m
2026-07-15 CMP123 - Jul 15, 17:00 UTCJul 16, 08:50 UTC15h 50m
2026-07-14 CMP122 PTY → CUN Jul 14, 23:30 UTCJul 15, 15:35 UTC16h 5m
2026-07-14 CMP122 PTY → CUN Jul 14, 17:05 UTCJul 15, 15:35 UTC22h 29m
2026-07-13 CMP752 - Jul 13, 21:45 UTCJul 14, 15:15 UTC17h 30m
2026-07-13 CMP752 - Jul 13, 16:30 UTCJul 14, 15:15 UTC22h 45m
2026-07-13 CMP752 - Jul 13, 14:10 UTCJul 14, 10:55 UTC20h 45m
2026-07-13 CMP752 - Jul 13, 10:00 UTCJul 14, 06:40 UTC20h 40m
2026-07-13 CMP752 - Jul 13, 05:55 UTCJul 14, 05:45 UTC23h 50m
2026-07-13 CMP204 - Jul 13, 01:50 UTCJul 14, 01:45 UTC23h 55m
2026-07-12 CMP205 - Jul 12, 23:50 UTCJul 13, 22:20 UTC22h 30m
2026-07-12 CMP205 - Jul 12, 22:30 UTCJul 13, 21:45 UTC23h 15m
2026-07-12 CMP205 - Jul 12, 18:05 UTCJul 13, 16:30 UTC22h 25m
2026-07-12 CMP205 - Jul 12, 15:30 UTCJul 13, 10:20 UTC18h 50m
2026-07-12 CMP205 - Jul 12, 10:25 UTCJul 13, 06:45 UTC20h 20m
2026-07-12 CMP205 - Jul 12, 07:50 UTCJul 13, 06:45 UTC22h 55m
2026-07-12 CMP822 - Jul 12, 06:45 UTCJul 13, 02:25 UTC19h 40m
2026-07-12 CMP773 - Jul 12, 00:25 UTCJul 12, 04:45 UTC4h 20m
2026-07-11 CMP290 - Jul 11, 12:40 UTCJul 11, 18:25 UTC5h 45m
2026-07-11 CMP290 - Jul 11, 09:45 UTCJul 11, 10:10 UTC25m
2026-07-10 CMP291 - Jul 10, 21:50 UTCJul 11, 07:45 UTC9h 55m
2026-07-10 CMP253 - Jul 10, 07:45 UTCJul 10, 18:30 UTC10h 45m
2026-07-09 CMP456 MCO → LAS Jul 9, 19:00 UTCJul 10, 05:20 UTC10h 20m
2026-07-09 CMP446 - Jul 9, 10:25 UTCJul 9, 16:35 UTC6h 10m
2026-07-08 CMP733 - Jul 8, 20:00 UTCJul 8, 20:45 UTC45m

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-9809CMP page for operator, model, and routing details .

Mode-S 0C21B7 frequently asked

What is Mode-S code 0C21B7?
0C21B7 is an ICAO 24-bit transponder address. Allocated to Suriname. Assigned to HP-9809CMP.
Where is Mode-S 0C21B7 registered?
Mode-S code 0C21B7 is allocated to Suriname (SR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0C21B7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0C21B7, octal 03020667, decimal 795,063.
What flights does 0C21B7 operate?
Mode-S 0C21B7 has broadcast 20 distinct callsigns, including CMP752, CMP820, CMP753, CMP456, CMP316.