sensors Mode-S transponder
0C21DC
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9812CMP · BOEING 737 MAX 8
- Hex
- 0C21DC
- Octal
- 03020734
- Decimal
- 795,100
- Country
- SR
- Tail
- HP-9812CMP
- Type
- B38M
- Flights observed
- 211
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- Jul 26, 18:00 UTC
Last known position
Country allocation
The ICAO 24-bit address 0C21DC 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 | - | 15 | 2026-06-15 |
| CMP820 | - | 10 | 2026-06-28 |
| CMP765 | Copa Airlines | 9 | 2026-05-15 |
| CMP424 | Copa Airlines | 8 | 2026-07-19 |
| CMP456 | Copa Airlines | 7 | 2026-07-24 |
| CMP253 | Copa Airlines | 7 | 2026-07-25 |
| CMP423 | - | 5 | 2026-07-18 |
| CMP422 | Copa Airlines | 5 | 2026-04-28 |
| CMP420 | - | 5 | 2026-07-02 |
| CMP195 | - | 5 | 2026-07-08 |
| CMP194 | - | 5 | 2026-07-07 |
| CMP122 | Copa Airlines | 5 | 2026-07-13 |
| CMP753 | Copa Airlines | 4 | 2026-05-02 |
| CMP752 | - | 4 | 2026-07-15 |
| CMP478 | Copa Airlines | 4 | 2026-05-20 |
| CMP421 | Copa Airlines | 4 | 2026-05-23 |
| CMP316 | - | 4 | 2026-07-17 |
| CMP236 | Copa Airlines | 4 | 2026-06-19 |
| CMP489 | Copa Airlines | 3 | 2026-06-07 |
| CMP484 | Copa Airlines | 3 | 2026-04-28 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CMP262 | CUN → PTY | Jul 26, 16:30 UTC | Jul 26, 18:00 UTC | 1h 30m |
| 2026-07-26 | CMP477 | DEN → PTY | Jul 26, 05:00 UTC | Jul 26, 14:30 UTC | 9h 31m |
| 2026-07-25 | CMP476 | PTY → DEN | Jul 25, 13:15 UTC | Jul 25, 23:55 UTC | 10h 40m |
| 2026-07-25 | CMP253 | LAS → PTY | Jul 25, 08:55 UTC | Jul 25, 12:40 UTC | 3h 45m |
| 2026-07-24 | CMP456 | PTY → LAS | Jul 24, 19:30 UTC | Jul 25, 05:10 UTC | 9h 40m |
| 2026-07-24 | CMP253 | LAS → PTY | Jul 24, 08:15 UTC | Jul 24, 17:55 UTC | 9h 40m |
| 2026-07-23 | CMP456 | PTY → LAS | Jul 23, 20:20 UTC | Jul 24, 05:40 UTC | 9h 20m |
| 2026-07-23 | CMP405 | PTY → PEI | Jul 23, 14:30 UTC | Jul 23, 18:40 UTC | 4h 10m |
| 2026-07-22 | CMP467 | RDU → PTY | Jul 22, 20:45 UTC | Jul 23, 04:00 UTC | 7h 15m |
| 2026-07-22 | CMP466 | PTY → RDU | Jul 22, 15:00 UTC | Jul 22, 18:25 UTC | 3h 25m |
| 2026-07-21 | CMP253 | - | Jul 21, 09:05 UTC | Jul 22, 04:10 UTC | 19h 5m |
| 2026-07-21 | CMP253 | - | Jul 21, 07:50 UTC | Jul 22, 04:10 UTC | 20h 20m |
| 2026-07-20 | CMP456 | PTY → LAS | Jul 20, 19:10 UTC | Jul 21, 05:30 UTC | 10h 19m |
| 2026-07-20 | CMP358 | - | Jul 20, 11:00 UTC | Jul 20, 17:55 UTC | 6h 55m |
| 2026-07-19 | CMP441 | PTY → MIA | Jul 19, 17:15 UTC | Jul 20, 02:35 UTC | 9h 20m |
| 2026-07-19 | CMP424 | FLN → PTY | Jul 19, 04:35 UTC | Jul 19, 15:15 UTC | 10h 40m |
| 2026-07-18 | CMP423 | - | Jul 18, 15:55 UTC | Jul 19, 02:55 UTC | 11h 0m |
| 2026-07-17 | CMP316 | - | Jul 17, 22:25 UTC | Jul 18, 14:30 UTC | 16h 6m |
| 2026-07-17 | CMP265 | PTY → FLL | Jul 17, 14:20 UTC | Jul 17, 20:04 UTC | 5h 45m |
| 2026-07-16 | CMP705 | BOS → SJO | Jul 16, 22:59 UTC | Jul 17, 13:00 UTC | 14h 0m |
| 2026-07-16 | CMP704 | PTY → BOS | Jul 16, 01:30 UTC | Jul 16, 18:15 UTC | 16h 45m |
| 2026-07-15 | CMP704 | PTY → BOS | Jul 15, 21:50 UTC | Jul 16, 18:15 UTC | 20h 25m |
| 2026-07-15 | CMP752 | - | Jul 15, 09:05 UTC | Jul 16, 06:50 UTC | 21h 45m |
| 2026-07-15 | CMP186 | - | Jul 15, 07:05 UTC | Jul 16, 06:50 UTC | 23h 45m |
| 2026-07-15 | CMP175 | - | Jul 15, 01:45 UTC | Jul 15, 04:55 UTC | 3h 10m |
| 2026-07-14 | CMP764 | - | Jul 14, 19:10 UTC | Jul 14, 19:20 UTC | 10m |
| 2026-07-13 | CMP745 | - | Jul 13, 22:35 UTC | Jul 14, 14:20 UTC | 15h 45m |
| 2026-07-13 | CMP745 | - | Jul 13, 17:15 UTC | Jul 14, 14:20 UTC | 21h 5m |
| 2026-07-13 | CMP122 | PTY → CUN | Jul 13, 14:20 UTC | Jul 13, 16:00 UTC | 1h 40m |
| 2026-07-13 | CMP208 | - | Jul 13, 00:30 UTC | Jul 13, 00:40 UTC | 10m |
| 2026-07-12 | CMP326 | - | Jul 12, 19:25 UTC | Jul 12, 20:50 UTC | 1h 25m |
| 2026-07-12 | CMP253 | LAS → CUN | Jul 12, 07:45 UTC | Jul 12, 17:50 UTC | 10h 5m |
| 2026-07-11 | CMP456 | CUN → LAS | Jul 11, 17:35 UTC | Jul 12, 05:05 UTC | 11h 30m |
| 2026-07-11 | CMP122 | PTY → CUN | Jul 11, 10:25 UTC | Jul 11, 15:40 UTC | 5h 15m |
| 2026-07-10 | CMP477 | - | Jul 10, 05:00 UTC | Jul 10, 21:05 UTC | 16h 5m |
| 2026-07-09 | CMP476 | GUA → DEN | Jul 9, 13:25 UTC | Jul 10, 00:10 UTC | 10h 45m |
| 2026-07-08 | CMP195 | - | Jul 8, 12:30 UTC | Jul 9, 04:25 UTC | 15h 55m |
| 2026-07-07 | CMP194 | - | Jul 7, 11:05 UTC | Jul 8, 06:00 UTC | 18h 55m |
| 2026-07-07 | CMP194 | - | Jul 7, 10:25 UTC | Jul 8, 06:00 UTC | 19h 35m |
| 2026-07-06 | CMP312 | BOS → PTY | Jul 6, 12:55 UTC | Jul 7, 02:50 UTC | 13h 55m |
| 2026-07-05 | CMP366 | - | Jul 5, 23:30 UTC | Jul 6, 02:15 UTC | 2h 45m |
| 2026-07-05 | CMP892 | PTY → ADZ | Jul 5, 16:20 UTC | Jul 5, 16:25 UTC | 5m |
| 2026-07-04 | CMP424 | - | Jul 4, 06:30 UTC | Jul 4, 15:20 UTC | 8h 50m |
| 2026-07-04 | CMP424 | - | Jul 4, 04:40 UTC | Jul 4, 05:05 UTC | 25m |
| 2026-07-03 | CMP423 | - | Jul 3, 14:25 UTC | Jul 4, 03:05 UTC | 12h 40m |
| 2026-07-02 | CMP420 | - | Jul 2, 23:25 UTC | Jul 3, 23:00 UTC | 23h 35m |
| 2026-07-02 | CMP420 | - | Jul 2, 17:35 UTC | Jul 3, 16:55 UTC | 23h 20m |
| 2026-07-02 | CMP420 | - | Jul 2, 15:10 UTC | Jul 3, 14:30 UTC | 23h 20m |
| 2026-07-02 | CMP424 | - | Jul 2, 05:45 UTC | Jul 3, 00:15 UTC | 18h 30m |
| 2026-07-02 | CMP424 | - | Jul 2, 04:30 UTC | Jul 3, 00:15 UTC | 19h 45m |
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-9812CMP page for operator, model, and routing details .