sensors Mode-S transponder
0C21DF
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9815CMP · BOEING 737 MAX 8
- Hex
- 0C21DF
- Octal
- 03020737
- Decimal
- 795,103
- Country
- SR
- Tail
- HP-9815CMP
- Type
- B38M
- Flights observed
- 110
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 5h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21DF 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 | 9 | 2026-05-24 |
| CMP752 | Copa Airlines | 7 | 2026-05-10 |
| CMP420 | Copa Airlines | 6 | 2026-05-09 |
| CMP380 | Copa Airlines | 5 | 2026-05-19 |
| CMP753 | Copa Airlines | 4 | 2026-05-12 |
| CMP424 | Copa Airlines | 4 | 2026-04-29 |
| CMP195 | Copa Airlines | 4 | 2026-05-23 |
| CMP194 | Copa Airlines | 4 | 2026-05-23 |
| CMP868 | Copa Airlines | 3 | 2026-05-25 |
| CMP450 | Copa Airlines | 3 | 2026-04-27 |
| CMP423 | Copa Airlines | 3 | 2026-04-28 |
| CMP361 | Copa Airlines | 3 | 2026-05-19 |
| CMP122 | Copa Airlines | 3 | 2026-05-27 |
| CMP884 | Copa Airlines | 2 | 2026-05-26 |
| CMP867 | - | 2 | 2026-04-14 |
| CMP478 | Copa Airlines | 2 | 2026-04-15 |
| CMP446 | Copa Airlines | 2 | 2026-04-24 |
| CMP445 | Copa Airlines | 2 | 2026-04-15 |
| CMP440 | - | 2 | 2026-04-16 |
| CMP432 | Copa Airlines | 2 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CMP317 | CUN → PTY | May 29, 17:10 UTC | May 30, 00:00 UTC | 6h 50m |
| 2026-05-29 | CMP316 | PTY → CUN | May 29, 13:45 UTC | May 29, 15:35 UTC | 1h 50m |
| 2026-05-27 | CMP123 | CUN → PTY | May 27, 17:50 UTC | May 27, 18:25 UTC | 35m |
| 2026-05-27 | CMP122 | PTY → CUN | May 27, 15:10 UTC | May 27, 15:20 UTC | 10m |
| 2026-05-26 | CMP122 | PTY → CUN | May 26, 22:50 UTC | May 27, 14:15 UTC | 15h 25m |
| 2026-05-26 | CMP884 | SAL → PTY | May 26, 15:09 UTC | May 26, 19:34 UTC | 4h 25m |
| 2026-05-25 | CMP868 | MCO → PTY | May 25, 19:59 UTC | May 26, 19:34 UTC | 23h 35m |
| 2026-05-24 | CMP820 | POA → PTY | May 24, 23:00 UTC | May 25, 17:45 UTC | 18h 45m |
| 2026-05-24 | CMP820 | POA → PTY | May 24, 21:35 UTC | May 25, 17:45 UTC | 20h 10m |
| 2026-05-24 | CMP820 | POA → PTY | May 24, 17:50 UTC | May 25, 17:45 UTC | 23h 55m |
| 2026-05-24 | CMP820 | POA → PTY | May 24, 16:35 UTC | May 25, 09:25 UTC | 16h 50m |
| 2026-05-23 | CMP293 | PTY → CUN | May 23, 20:45 UTC | May 24, 14:40 UTC | 17h 55m |
| 2026-05-23 | CMP245 | HAV → PTY | May 23, 14:05 UTC | May 24, 13:25 UTC | 23h 20m |
| 2026-05-23 | CMP195 | MEX → PTY | May 23, 12:05 UTC | May 24, 10:10 UTC | 22h 5m |
| 2026-05-23 | CMP194 | PTY → MEX | May 23, 04:40 UTC | May 23, 07:25 UTC | 2h 45m |
| 2026-05-22 | CMP414 | BOG → PTY | May 22, 23:35 UTC | May 22, 23:45 UTC | 10m |
| 2026-05-22 | CMP413 | PTY → BOG | May 22, 21:40 UTC | May 22, 22:00 UTC | 20m |
| 2026-05-22 | CMP820 | POA → PTY | May 22, 01:40 UTC | May 22, 18:20 UTC | 16h 40m |
| 2026-05-21 | CMP820 | POA → PTY | May 21, 22:45 UTC | May 22, 18:20 UTC | 19h 35m |
| 2026-05-21 | CMP820 | POA → PTY | May 21, 17:55 UTC | May 22, 17:45 UTC | 23h 50m |
| 2026-05-21 | CMP820 | POA → PTY | May 21, 13:50 UTC | May 22, 13:45 UTC | 23h 55m |
| 2026-05-21 | CMP820 | POA → PTY | May 21, 13:40 UTC | May 22, 09:30 UTC | 19h 50m |
| 2026-05-19 | CMP361 | GUA → PTY | May 19, 23:35 UTC | May 19, 23:45 UTC | 10m |
| 2026-05-19 | CMP361 | GUA → PTY | May 19, 22:40 UTC | May 19, 23:05 UTC | 25m |
| 2026-05-19 | CMP380 | GUA → MGA | May 19, 13:25 UTC | May 19, 14:55 UTC | 1h 30m |
| 2026-05-17 | CMP821 | PTY → POA | May 17, 17:20 UTC | May 18, 09:40 UTC | 16h 20m |
| 2026-05-16 | CMP132 | LIM → PTY | May 16, 22:15 UTC | May 17, 15:25 UTC | 17h 11m |
| 2026-05-16 | CMP131 | PTY → LIM | May 16, 19:30 UTC | May 16, 20:05 UTC | 35m |
| 2026-05-15 | CMP361 | GUA → PTY | May 15, 22:40 UTC | May 16, 20:05 UTC | 21h 26m |
| 2026-05-15 | CMP380 | GUA → MGA | May 15, 16:35 UTC | May 15, 21:10 UTC | 4h 35m |
| 2026-05-15 | CMP149 | MEX → PTY | May 15, 07:35 UTC | May 15, 14:45 UTC | 7h 10m |
| 2026-05-14 | CMP138 | PTY → MEX | May 14, 22:25 UTC | May 15, 00:50 UTC | 2h 25m |
| 2026-05-12 | CMP753 | SSA → PTY | May 12, 06:20 UTC | May 12, 18:35 UTC | 12h 15m |
| 2026-05-11 | CMP753 | SSA → PTY | May 11, 15:00 UTC | May 12, 06:00 UTC | 15h 0m |
| 2026-05-11 | CMP753 | SSA → PTY | May 11, 06:05 UTC | May 12, 05:45 UTC | 23h 41m |
| 2026-05-11 | CMP753 | SSA → PTY | May 11, 05:40 UTC | May 11, 06:00 UTC | 20m |
| 2026-05-10 | CMP752 | PTY → SSA | May 10, 08:10 UTC | May 11, 02:35 UTC | 18h 25m |
| 2026-05-09 | CMP420 | PTY → MDZ | May 9, 23:35 UTC | May 10, 17:30 UTC | 17h 55m |
| 2026-05-09 | CMP420 | PTY → MDZ | May 9, 10:35 UTC | May 10, 08:54 UTC | 22h 20m |
| 2026-05-09 | CMP420 | PTY → MDZ | May 9, 01:50 UTC | May 10, 00:24 UTC | 22h 35m |
| 2026-05-09 | CMP789 | COR → PTY | May 9, 01:20 UTC | May 9, 23:44 UTC | 22h 25m |
| 2026-05-08 | CMP296 | ASU → PTY | May 8, 07:50 UTC | May 9, 01:50 UTC | 18h 0m |
| 2026-05-08 | CMP296 | ASU → PTY | May 8, 07:24 UTC | May 9, 01:50 UTC | 18h 25m |
| 2026-05-08 | CMP297 | PTY → ASU | May 8, 02:09 UTC | May 8, 05:24 UTC | 3h 15m |
| 2026-05-05 | CMP464 | COR → PTY | May 5, 23:00 UTC | May 5, 23:10 UTC | 10m |
| 2026-05-05 | CMP205 | PTY → BSB | May 5, 02:05 UTC | May 5, 20:25 UTC | 18h 20m |
| 2026-05-05 | CMP205 | PTY → BSB | May 5, 00:05 UTC | May 5, 20:25 UTC | 20h 20m |
| 2026-05-03 | CMP871 | SAL → PTY | May 3, 20:40 UTC | May 3, 20:49 UTC | 10m |
| 2026-05-02 | CMP132 | LIM → PTY | May 2, 22:10 UTC | May 3, 20:49 UTC | 22h 39m |
| 2026-05-02 | CMP131 | PTY → LIM | May 2, 13:25 UTC | May 2, 20:05 UTC | 6h 40m |
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-9815CMP page for operator, model, and routing details .