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
- Flights observed
- 224
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- Jul 26, 13:45 UTC
Last known position
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 | - | 15 | 2026-06-28 |
| CMP821 | Copa Airlines | 7 | 2026-07-25 |
| CMP723 | Copa Airlines | 7 | 2026-05-19 |
| CMP476 | - | 7 | 2026-07-10 |
| CMP424 | - | 7 | 2026-06-21 |
| CMP423 | - | 7 | 2026-06-20 |
| CMP708 | - | 6 | 2026-07-22 |
| CMP477 | - | 6 | 2026-07-11 |
| CMP858 | Copa Airlines | 5 | 2026-06-07 |
| CMP857 | Copa Airlines | 5 | 2026-06-08 |
| CMP820 | Copa Airlines | 5 | 2026-06-06 |
| CMP709 | Copa Airlines | 5 | 2026-07-22 |
| CMP113 | Copa Airlines | 5 | 2026-05-26 |
| CMP765 | Copa Airlines | 4 | 2026-05-12 |
| CMP450 | - | 4 | 2026-07-02 |
| CMP205 | - | 4 | 2026-07-13 |
| CMP867 | Copa Airlines | 3 | 2026-07-02 |
| CMP863 | - | 3 | 2026-07-19 |
| CMP769 | Copa Airlines | 3 | 2026-07-24 |
| CMP732 | - | 3 | 2026-07-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 17:50 UTC | Jul 26, 13:45 UTC | 19h 56m |
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 16:20 UTC | Jul 26, 13:45 UTC | 21h 26m |
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 14:00 UTC | Jul 26, 13:45 UTC | 23h 46m |
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 08:35 UTC | Jul 26, 06:05 UTC | 21h 30m |
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 05:50 UTC | Jul 26, 05:45 UTC | 23h 55m |
| 2026-07-25 | CMP821 | PTY → POA | Jul 25, 05:20 UTC | Jul 26, 02:30 UTC | 21h 10m |
| 2026-07-24 | CMP769 | BOG → PTY | Jul 24, 23:50 UTC | Jul 25, 23:15 UTC | 23h 25m |
| 2026-07-24 | CMP769 | BOG → PTY | Jul 24, 22:45 UTC | Jul 25, 21:45 UTC | 23h 0m |
| 2026-07-24 | CMP361 | GUA → PTY | Jul 24, 16:35 UTC | Jul 24, 21:15 UTC | 4h 40m |
| 2026-07-23 | CMP716 | AUS → PTY | Jul 23, 20:50 UTC | Jul 24, 14:45 UTC | 17h 55m |
| 2026-07-23 | CMP715 | PTY → AUS | Jul 23, 08:25 UTC | Jul 23, 18:25 UTC | 10h 0m |
| 2026-07-22 | CMP709 | BWI → PTY | Jul 22, 21:15 UTC | Jul 23, 06:35 UTC | 9h 20m |
| 2026-07-22 | CMP708 | - | Jul 22, 17:05 UTC | Jul 22, 19:05 UTC | 2h 0m |
| 2026-07-21 | CMP389 | GUA → PTY | Jul 21, 13:25 UTC | Jul 22, 01:15 UTC | 11h 50m |
| 2026-07-20 | CMP414 | BOG → GUA | Jul 20, 23:35 UTC | Jul 21, 04:25 UTC | 4h 50m |
| 2026-07-20 | CMP769 | BOG → PTY | Jul 20, 04:30 UTC | Jul 20, 22:05 UTC | 17h 35m |
| 2026-07-19 | CMP406 | - | Jul 19, 20:20 UTC | Jul 19, 20:35 UTC | 15m |
| 2026-07-19 | CMP405 | - | Jul 19, 14:20 UTC | Jul 19, 18:45 UTC | 4h 25m |
| 2026-07-19 | CMP863 | - | Jul 19, 06:45 UTC | Jul 19, 13:05 UTC | 6h 20m |
| 2026-07-18 | CMP866 | PTY → MEX | Jul 18, 21:10 UTC | Jul 19, 03:40 UTC | 6h 30m |
| 2026-07-18 | CMP342 | - | Jul 18, 19:25 UTC | Jul 18, 19:50 UTC | 25m |
| 2026-07-18 | CMP756 | - | Jul 18, 14:20 UTC | Jul 18, 14:30 UTC | 10m |
| 2026-07-17 | CMP123 | - | Jul 17, 16:59 UTC | Jul 18, 09:15 UTC | 16h 16m |
| 2026-07-17 | CMP122 | PTY → CUN | Jul 17, 10:15 UTC | Jul 17, 15:20 UTC | 5h 5m |
| 2026-07-17 | CMP200 | - | Jul 17, 01:05 UTC | Jul 17, 01:25 UTC | 20m |
| 2026-07-16 | CMP394 | - | Jul 16, 19:50 UTC | Jul 16, 22:05 UTC | 2h 15m |
| 2026-07-16 | CMP393 | - | Jul 16, 15:19 UTC | Jul 16, 17:30 UTC | 2h 10m |
| 2026-07-15 | CMP393 | - | Jul 15, 20:50 UTC | Jul 16, 17:30 UTC | 20h 40m |
| 2026-07-15 | CMP393 | - | Jul 15, 17:50 UTC | Jul 16, 17:30 UTC | 23h 40m |
| 2026-07-15 | CMP195 | - | Jul 15, 12:15 UTC | Jul 15, 21:15 UTC | 9h 0m |
| 2026-07-14 | CMP194 | GUA → MEX | Jul 14, 22:30 UTC | Jul 15, 06:15 UTC | 7h 44m |
| 2026-07-13 | CMP205 | - | Jul 13, 22:20 UTC | Jul 14, 14:40 UTC | 16h 20m |
| 2026-07-13 | CMP205 | - | Jul 13, 18:20 UTC | Jul 14, 14:40 UTC | 20h 20m |
| 2026-07-13 | CMP205 | - | Jul 13, 15:35 UTC | Jul 14, 13:45 UTC | 22h 10m |
| 2026-07-13 | CMP205 | - | Jul 13, 08:55 UTC | Jul 14, 06:45 UTC | 21h 50m |
| 2026-07-13 | CMP420 | - | Jul 13, 00:10 UTC | Jul 13, 23:45 UTC | 23h 35m |
| 2026-07-12 | CMP420 | - | Jul 12, 17:25 UTC | Jul 13, 15:40 UTC | 22h 15m |
| 2026-07-12 | CMP420 | - | Jul 12, 10:15 UTC | Jul 13, 09:45 UTC | 23h 30m |
| 2026-07-11 | CMP460 | - | Jul 11, 17:40 UTC | Jul 12, 00:30 UTC | 6h 50m |
| 2026-07-11 | CMP477 | - | Jul 11, 04:50 UTC | Jul 11, 12:50 UTC | 8h 0m |
| 2026-07-10 | CMP476 | GUA → DEN | Jul 10, 15:00 UTC | Jul 11, 00:45 UTC | 9h 46m |
| 2026-07-09 | CMP496 | - | Jul 9, 21:30 UTC | Jul 10, 04:50 UTC | 7h 20m |
| 2026-07-09 | CMP253 | - | Jul 9, 07:45 UTC | Jul 9, 18:20 UTC | 10h 35m |
| 2026-07-08 | CMP456 | - | Jul 8, 23:55 UTC | Jul 9, 05:20 UTC | 5h 25m |
| 2026-07-07 | CMP464 | - | Jul 7, 23:05 UTC | Jul 7, 23:15 UTC | 10m |
| 2026-07-07 | CMP128 | - | Jul 7, 19:45 UTC | Jul 7, 19:55 UTC | 10m |
| 2026-07-07 | CMP253 | - | Jul 7, 07:50 UTC | Jul 7, 12:50 UTC | 5h 0m |
| 2026-07-06 | CMP456 | - | Jul 6, 23:55 UTC | Jul 7, 05:30 UTC | 5h 35m |
| 2026-07-05 | CMP732 | - | Jul 5, 15:40 UTC | Jul 6, 08:35 UTC | 16h 55m |
| 2026-07-04 | CMP709 | - | Jul 4, 23:50 UTC | Jul 5, 18:15 UTC | 18h 25m |
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 .