sensors Mode-S transponder
0C21DD
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9813CMP · BOEING 737 MAX 8
- Hex
- 0C21DD
- Octal
- 03020735
- Decimal
- 795,101
- Country
- SR
- Tail
- HP-9813CMP
- Type
- B38M
- Flights observed
- 99
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 11h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21DD 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 |
|---|---|---|---|
| CMP821 | Copa Airlines | 6 | 2026-05-19 |
| CMP820 | Copa Airlines | 4 | 2026-05-10 |
| CMP752 | Copa Airlines | 4 | 2026-05-15 |
| CMP734 | Copa Airlines | 4 | 2026-04-24 |
| CMP479 | Copa Airlines | 4 | 2026-05-21 |
| CMP422 | Copa Airlines | 4 | 2026-05-25 |
| CMP484 | Copa Airlines | 3 | 2026-05-26 |
| CMP474 | Copa Airlines | 3 | 2026-05-05 |
| CMP450 | Copa Airlines | 3 | 2026-05-15 |
| CMP446 | Copa Airlines | 3 | 2026-05-20 |
| CMP236 | Copa Airlines | 3 | 2026-04-28 |
| CMP149 | Copa Airlines | 3 | 2026-05-03 |
| CMP138 | Copa Airlines | 3 | 2026-05-02 |
| CMP9813 | Copa Airlines | 2 | 2026-05-23 |
| CMP871 | Copa Airlines | 2 | 2026-05-27 |
| CMP789 | Copa Airlines | 2 | 2026-04-22 |
| CMP760 | - | 2 | 2026-04-17 |
| CMP456 | Copa Airlines | 2 | 2026-05-17 |
| CMP451 | Copa Airlines | 2 | 2026-05-15 |
| CMP407 | - | 2 | 2026-04-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CMP389 | GUA → PTY | May 29, 13:15 UTC | May 29, 18:25 UTC | 5h 11m |
| 2026-05-28 | CMP496 | PTY → GUA | May 28, 17:00 UTC | May 29, 04:45 UTC | 11h 45m |
| 2026-05-27 | CMP871 | SAL → PTY | May 27, 20:45 UTC | May 28, 15:15 UTC | 18h 30m |
| 2026-05-27 | CMP871 | SAL → PTY | May 27, 17:35 UTC | May 28, 15:15 UTC | 21h 40m |
| 2026-05-27 | CMP143 | SJU → PTY | May 27, 00:25 UTC | May 27, 00:39 UTC | 15m |
| 2026-05-26 | CMP142 | PTY → SJU | May 26, 22:15 UTC | May 26, 22:25 UTC | 10m |
| 2026-05-26 | CMP484 | YUL → PTY | May 26, 12:50 UTC | May 26, 17:30 UTC | 4h 40m |
| 2026-05-25 | CMP422 | PTY → YUL | May 25, 10:25 UTC | May 26, 04:30 UTC | 18h 4m |
| 2026-05-25 | CMP427 | PTY → MIA | May 25, 01:55 UTC | May 25, 02:15 UTC | 20m |
| 2026-05-24 | CMP425 | TGU → PTY | May 24, 15:10 UTC | May 24, 17:40 UTC | 2h 30m |
| 2026-05-23 | CMP9813 | LAS → PTY | May 23, 13:20 UTC | May 23, 13:45 UTC | 25m |
| 2026-05-21 | CMP479 | MCO → PTY | May 21, 19:10 UTC | May 22, 01:45 UTC | 6h 35m |
| 2026-05-20 | CMP446 | PTY → MCO | May 20, 23:35 UTC | May 21, 16:30 UTC | 16h 55m |
| 2026-05-20 | CMP446 | PTY → MCO | May 20, 17:20 UTC | May 21, 16:30 UTC | 23h 10m |
| 2026-05-20 | CMP317 | CUN → PTY | May 20, 17:05 UTC | May 21, 14:25 UTC | 21h 20m |
| 2026-05-19 | CMP821 | PTY → POA | May 19, 21:30 UTC | May 20, 15:25 UTC | 17h 56m |
| 2026-05-19 | CMP821 | PTY → POA | May 19, 07:55 UTC | May 20, 06:20 UTC | 22h 26m |
| 2026-05-18 | CMP132 | LIM → PTY | May 18, 22:20 UTC | May 19, 05:20 UTC | 7h 0m |
| 2026-05-18 | CMP253 | LAS → PTY | May 18, 07:55 UTC | May 18, 20:10 UTC | 12h 14m |
| 2026-05-17 | CMP456 | PTY → LAS | May 17, 23:45 UTC | May 18, 05:55 UTC | 6h 10m |
| 2026-05-16 | CMP333 | MIA → PTY | May 16, 21:30 UTC | May 16, 23:05 UTC | 1h 35m |
| 2026-05-16 | CMP753 | SSA → PTY | May 16, 01:30 UTC | May 16, 18:25 UTC | 16h 56m |
| 2026-05-15 | CMP752 | PTY → SSA | May 15, 21:50 UTC | May 16, 18:25 UTC | 20h 36m |
| 2026-05-15 | CMP752 | PTY → SSA | May 15, 18:10 UTC | May 16, 16:35 UTC | 22h 26m |
| 2026-05-15 | CMP752 | PTY → SSA | May 15, 15:20 UTC | May 16, 10:25 UTC | 19h 6m |
| 2026-05-15 | CMP451 | SJU → PTY | May 15, 09:45 UTC | May 15, 10:00 UTC | 15m |
| 2026-05-15 | CMP450 | PTY → SJU | May 15, 02:00 UTC | May 15, 02:15 UTC | 15m |
| 2026-05-14 | CMP241 | PTY → PUJ | May 14, 16:05 UTC | May 14, 18:45 UTC | 2h 40m |
| 2026-05-14 | CMP451 | SJU → PTY | May 14, 09:45 UTC | May 14, 09:55 UTC | 10m |
| 2026-05-14 | CMP450 | PTY → SJU | May 14, 02:05 UTC | May 14, 02:15 UTC | 10m |
| 2026-05-13 | CMP195 | MEX → PTY | May 13, 12:20 UTC | May 13, 14:40 UTC | 2h 20m |
| 2026-05-13 | CMP194 | PTY → MEX | May 13, 03:40 UTC | May 13, 06:05 UTC | 2h 25m |
| 2026-05-12 | CMP143 | SJU → PTY | May 12, 22:25 UTC | May 12, 22:40 UTC | 15m |
| 2026-05-12 | CMP142 | PTY → SJU | May 12, 20:01 UTC | May 12, 20:15 UTC | 15m |
| 2026-05-11 | CMP479 | MCO → PTY | May 11, 19:10 UTC | May 12, 13:05 UTC | 17h 55m |
| 2026-05-10 | CMP820 | POA → PTY | May 10, 22:25 UTC | May 11, 16:45 UTC | 18h 20m |
| 2026-05-10 | CMP820 | POA → PTY | May 10, 16:50 UTC | May 11, 14:35 UTC | 21h 45m |
| 2026-05-10 | CMP820 | POA → PTY | May 10, 14:30 UTC | May 11, 09:35 UTC | 19h 5m |
| 2026-05-10 | CMP821 | PTY → POA | May 10, 08:00 UTC | May 11, 06:20 UTC | 22h 20m |
| 2026-05-10 | CMP821 | PTY → POA | May 10, 06:40 UTC | May 11, 05:15 UTC | 22h 35m |
| 2026-05-09 | CMP866 | PTY → MEX | May 9, 09:45 UTC | May 10, 03:35 UTC | 17h 50m |
| 2026-05-09 | CMP450 | PTY → SJU | May 9, 02:10 UTC | May 9, 02:20 UTC | 10m |
| 2026-05-07 | CMP9813 | LAS → PTY | May 7, 20:50 UTC | May 8, 01:49 UTC | 5h 0m |
| 2026-05-05 | CMP456 | PTY → LAS | May 5, 12:00 UTC | May 6, 05:35 UTC | 17h 35m |
| 2026-05-05 | CMP474 | PTY → SCL | May 5, 03:15 UTC | May 5, 04:05 UTC | 50m |
| 2026-05-04 | CMP474 | PTY → SCL | May 4, 09:15 UTC | May 5, 04:05 UTC | 18h 51m |
| 2026-05-04 | CMP474 | PTY → SCL | May 4, 05:25 UTC | May 5, 04:05 UTC | 22h 41m |
| 2026-05-03 | CMP752 | PTY → SSA | May 3, 17:20 UTC | May 4, 09:15 UTC | 15h 55m |
| 2026-05-03 | CMP149 | MEX → PTY | May 3, 07:35 UTC | May 3, 09:55 UTC | 2h 20m |
| 2026-05-02 | CMP138 | PTY → MEX | May 2, 15:35 UTC | May 3, 01:30 UTC | 9h 55m |
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-9813CMP page for operator, model, and routing details .