sensors Mode-S transponder
0C21B8
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9810CMP · BOEING 737 MAX 8
- Hex
- 0C21B8
- Octal
- 03020670
- Decimal
- 795,064
- Country
- SR
- Tail
- HP-9810CMP
- Type
- B38M
- Flights observed
- 123
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 0C21B8 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 |
|---|---|---|---|
| CMP253 | Copa Airlines | 14 | 2026-05-29 |
| CMP456 | Copa Airlines | 13 | 2026-05-28 |
| CMP734 | Copa Airlines | 12 | 2026-05-26 |
| CMP820 | Copa Airlines | 9 | 2026-04-26 |
| CMP476 | Copa Airlines | 7 | 2026-05-27 |
| CMP477 | Copa Airlines | 5 | 2026-05-28 |
| CMP821 | Copa Airlines | 4 | 2026-05-04 |
| CMP753 | Copa Airlines | 4 | 2026-04-26 |
| CMP721 | Copa Airlines | 3 | 2026-05-25 |
| CMP496 | Copa Airlines | 3 | 2026-05-26 |
| CMP333 | Copa Airlines | 3 | 2026-05-17 |
| CMP252 | Copa Airlines | 3 | 2026-04-20 |
| CMP195 | Copa Airlines | 3 | 2026-05-11 |
| CMP194 | Copa Airlines | 3 | 2026-05-10 |
| CMP149 | Copa Airlines | 3 | 2026-05-06 |
| CMP879 | Copa Airlines | 2 | 2026-04-23 |
| CMP862 | Copa Airlines | 2 | 2026-05-09 |
| CMP765 | Copa Airlines | 2 | 2026-04-15 |
| CMP723 | Copa Airlines | 2 | 2026-05-25 |
| CMP317 | Copa Airlines | 2 | 2026-05-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | CMP752 | PTY → SSA | May 29, 21:50 UTC | May 29, 22:10 UTC | 20m |
| 2026-05-29 | CMP894 | JFK → PTY | May 29, 17:50 UTC | May 29, 18:00 UTC | 10m |
| 2026-05-29 | CMP892 | PTY → ADZ | May 29, 16:15 UTC | May 29, 16:25 UTC | 10m |
| 2026-05-29 | CMP253 | LAS → PTY | May 29, 07:55 UTC | May 29, 13:00 UTC | 5h 5m |
| 2026-05-28 | CMP456 | PTY → LAS | May 28, 10:05 UTC | May 29, 05:15 UTC | 19h 10m |
| 2026-05-28 | CMP456 | PTY → LAS | May 28, 09:40 UTC | May 29, 05:15 UTC | 19h 35m |
| 2026-05-28 | CMP456 | PTY → LAS | May 28, 06:05 UTC | May 29, 05:15 UTC | 23h 10m |
| 2026-05-28 | CMP477 | DEN → PTY | May 28, 05:10 UTC | May 29, 04:00 UTC | 22h 50m |
| 2026-05-27 | CMP476 | PTY → DEN | May 27, 13:20 UTC | May 28, 00:15 UTC | 10h 55m |
| 2026-05-26 | CMP496 | PTY → GUA | May 26, 20:50 UTC | May 27, 04:34 UTC | 7h 45m |
| 2026-05-26 | CMP496 | PTY → GUA | May 26, 08:04 UTC | May 27, 04:34 UTC | 20h 30m |
| 2026-05-26 | CMP496 | PTY → GUA | May 26, 07:59 UTC | May 27, 04:34 UTC | 20h 35m |
| 2026-05-26 | CMP734 | CNF → PTY | May 26, 05:10 UTC | May 26, 21:00 UTC | 15h 50m |
| 2026-05-26 | CMP734 | CNF → PTY | May 26, 00:04 UTC | May 26, 21:00 UTC | 20h 55m |
| 2026-05-25 | CMP734 | CNF → PTY | May 25, 20:50 UTC | May 26, 09:09 UTC | 12h 20m |
| 2026-05-25 | CMP734 | CNF → PTY | May 25, 08:05 UTC | May 26, 07:59 UTC | 23h 54m |
| 2026-05-25 | CMP723 | GDL → PTY | May 25, 06:55 UTC | May 26, 05:59 UTC | 23h 5m |
| 2026-05-25 | CMP723 | GDL → PTY | May 25, 04:05 UTC | May 26, 00:24 UTC | 20h 20m |
| 2026-05-25 | CMP721 | PTY → GDL | May 25, 02:40 UTC | May 26, 00:24 UTC | 21h 45m |
| 2026-05-25 | CMP721 | PTY → GDL | May 25, 01:55 UTC | May 25, 21:04 UTC | 19h 10m |
| 2026-05-24 | CMP721 | PTY → GDL | May 24, 13:00 UTC | May 25, 08:35 UTC | 19h 35m |
| 2026-05-24 | CMP290 | ASU → PTY | May 24, 10:05 UTC | May 25, 08:35 UTC | 22h 30m |
| 2026-05-23 | CMP291 | PTY → ASU | May 23, 23:00 UTC | May 24, 08:00 UTC | 9h 0m |
| 2026-05-23 | CMP861 | BOG → PTY | May 23, 14:55 UTC | May 23, 15:10 UTC | 15m |
| 2026-05-23 | CMP860 | PTY → BOG | May 23, 05:10 UTC | May 23, 05:40 UTC | 30m |
| 2026-05-21 | CMP317 | CUN → PTY | May 21, 17:10 UTC | May 22, 09:05 UTC | 15h 55m |
| 2026-05-20 | CMP316 | PTY → CUN | May 20, 23:05 UTC | May 21, 15:35 UTC | 16h 30m |
| 2026-05-20 | CMP884 | SAL → PTY | May 20, 01:25 UTC | May 20, 15:35 UTC | 14h 11m |
| 2026-05-19 | CMP477 | DEN → PTY | May 19, 06:05 UTC | May 20, 01:30 UTC | 19h 25m |
| 2026-05-19 | CMP477 | DEN → PTY | May 19, 05:05 UTC | May 20, 01:30 UTC | 20h 25m |
| 2026-05-18 | CMP476 | PTY → DEN | May 18, 18:45 UTC | May 18, 23:50 UTC | 5h 5m |
| 2026-05-17 | CMP476 | PTY → DEN | May 17, 22:05 UTC | May 18, 22:00 UTC | 23h 54m |
| 2026-05-17 | CMP333 | MIA → PTY | May 17, 21:55 UTC | May 18, 20:00 UTC | 22h 4m |
| 2026-05-17 | CMP253 | LAS → PTY | May 17, 07:45 UTC | May 17, 18:25 UTC | 10h 40m |
| 2026-05-16 | CMP456 | PTY → LAS | May 16, 14:05 UTC | May 17, 05:10 UTC | 15h 5m |
| 2026-05-16 | CMP456 | PTY → LAS | May 16, 08:05 UTC | May 17, 05:10 UTC | 21h 5m |
| 2026-05-16 | CMP456 | PTY → LAS | May 16, 06:35 UTC | May 17, 05:10 UTC | 22h 35m |
| 2026-05-15 | CMP448 | PTY → SDQ | May 15, 12:30 UTC | May 16, 04:20 UTC | 15h 49m |
| 2026-05-14 | CMP253 | LAS → PTY | May 14, 08:05 UTC | May 15, 02:20 UTC | 18h 15m |
| 2026-05-14 | CMP253 | LAS → PTY | May 14, 07:35 UTC | May 15, 02:20 UTC | 18h 45m |
| 2026-05-13 | CMP456 | PTY → LAS | May 13, 12:30 UTC | May 14, 05:10 UTC | 16h 40m |
| 2026-05-13 | CMP253 | LAS → PTY | May 13, 07:45 UTC | May 13, 12:00 UTC | 4h 15m |
| 2026-05-12 | CMP456 | PTY → LAS | May 12, 23:35 UTC | May 13, 05:00 UTC | 5h 25m |
| 2026-05-11 | CMP195 | MEX → PTY | May 11, 12:05 UTC | May 11, 20:35 UTC | 8h 31m |
| 2026-05-10 | CMP194 | PTY → MEX | May 10, 21:19 UTC | May 11, 06:05 UTC | 8h 45m |
| 2026-05-09 | CMP862 | PTY → MCO | May 9, 22:45 UTC | May 10, 17:55 UTC | 19h 10m |
| 2026-05-09 | CMP477 | DEN → PTY | May 9, 06:15 UTC | May 9, 14:40 UTC | 8h 25m |
| 2026-05-08 | CMP476 | PTY → DEN | May 8, 18:50 UTC | May 8, 23:50 UTC | 5h 0m |
| 2026-05-07 | CMP476 | PTY → DEN | May 7, 22:05 UTC | May 8, 22:00 UTC | 23h 55m |
| 2026-05-07 | CMP459 | MCO → PTY | May 7, 21:15 UTC | May 8, 19:15 UTC | 22h 0m |
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-9810CMP page for operator, model, and routing details .