sensors Mode-S transponder
0C21B5
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-9807CMP · BOEING 737 MAX 8
- Hex
- 0C21B5
- Octal
- 03020665
- Decimal
- 795,061
- Country
- SR
- Tail
- HP-9807CMP
- Type
- B38M
- Flights observed
- 245
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- Jul 26, 18:20 UTC
Current position
Country allocation
The ICAO 24-bit address 0C21B5 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 | 16 | 2026-05-28 |
| CMP734 | Copa Airlines | 12 | 2026-07-25 |
| CMP820 | - | 9 | 2026-06-25 |
| CMP709 | - | 8 | 2026-06-26 |
| CMP708 | Copa Airlines | 7 | 2026-06-26 |
| CMP423 | - | 7 | 2026-07-16 |
| CMP868 | - | 6 | 2026-06-29 |
| CMP625 | Copa Airlines | 6 | 2026-07-25 |
| CMP867 | Copa Airlines | 5 | 2026-07-07 |
| CMP805 | Copa Airlines | 5 | 2026-07-05 |
| CMP316 | - | 5 | 2026-07-10 |
| CMP899 | - | 4 | 2026-07-12 |
| CMP760 | Copa Airlines | 4 | 2026-06-09 |
| CMP451 | - | 4 | 2026-07-07 |
| CMP424 | - | 4 | 2026-07-12 |
| CMP421 | Copa Airlines | 4 | 2026-06-14 |
| CMP235 | Copa Airlines | 4 | 2026-05-20 |
| CMP765 | Copa Airlines | 3 | 2026-05-17 |
| CMP753 | Copa Airlines | 3 | 2026-05-22 |
| CMP752 | - | 3 | 2026-07-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CMP890 | POP → PTY | Jul 26, 17:50 UTC | Jul 26, 18:20 UTC | 30m |
| 2026-07-26 | CMP889 | PTY → POP | Jul 26, 15:00 UTC | Jul 26, 15:10 UTC | 10m |
| 2026-07-25 | CMP734 | CNF → PTY | Jul 25, 17:40 UTC | Jul 26, 14:05 UTC | 20h 26m |
| 2026-07-25 | CMP734 | CNF → PTY | Jul 25, 16:00 UTC | Jul 26, 14:05 UTC | 22h 6m |
| 2026-07-25 | CMP734 | CNF → PTY | Jul 25, 13:20 UTC | Jul 26, 10:15 UTC | 20h 56m |
| 2026-07-25 | CMP626 | - | Jul 25, 13:00 UTC | Jul 26, 10:15 UTC | 21h 16m |
| 2026-07-25 | CMP626 | - | Jul 25, 09:20 UTC | Jul 26, 08:55 UTC | 23h 36m |
| 2026-07-25 | CMP626 | - | Jul 25, 09:00 UTC | Jul 26, 06:55 UTC | 21h 56m |
| 2026-07-25 | CMP625 | PTY → POA | Jul 25, 06:00 UTC | Jul 26, 01:20 UTC | 19h 20m |
| 2026-07-25 | CMP625 | PTY → POA | Jul 25, 04:40 UTC | Jul 26, 01:20 UTC | 20h 40m |
| 2026-07-24 | CMP625 | PTY → POA | Jul 24, 17:35 UTC | Jul 25, 16:40 UTC | 23h 5m |
| 2026-07-24 | CMP625 | PTY → POA | Jul 24, 15:30 UTC | Jul 25, 13:50 UTC | 22h 20m |
| 2026-07-24 | CMP625 | PTY → POA | Jul 24, 11:20 UTC | Jul 25, 10:05 UTC | 22h 45m |
| 2026-07-24 | CMP625 | PTY → POA | Jul 24, 10:50 UTC | Jul 25, 09:15 UTC | 22h 25m |
| 2026-07-23 | CMP484 | YUL → PTY | Jul 23, 13:05 UTC | Jul 23, 23:40 UTC | 10h 35m |
| 2026-07-22 | CMP312 | BOS → PTY | Jul 22, 16:30 UTC | Jul 23, 04:25 UTC | 11h 55m |
| 2026-07-21 | CMP366 | PTY → BOS | Jul 21, 11:55 UTC | Jul 22, 03:40 UTC | 15h 45m |
| 2026-07-20 | CMP347 | CUN → PTY | Jul 20, 21:50 UTC | Jul 21, 03:50 UTC | 5h 59m |
| 2026-07-20 | CMP324 | PTY → CUN | Jul 20, 14:25 UTC | Jul 20, 20:20 UTC | 5h 55m |
| 2026-07-19 | CMP464 | COR → PTY | Jul 19, 23:25 UTC | Jul 20, 13:20 UTC | 13h 55m |
| 2026-07-19 | CMP290 | - | Jul 19, 12:20 UTC | Jul 19, 21:20 UTC | 9h 0m |
| 2026-07-18 | CMP291 | PTY → ASU | Jul 18, 16:40 UTC | Jul 19, 10:20 UTC | 17h 40m |
| 2026-07-18 | CMP291 | PTY → ASU | Jul 18, 13:10 UTC | Jul 19, 10:20 UTC | 21h 10m |
| 2026-07-17 | CMP705 | - | Jul 17, 21:10 UTC | Jul 18, 09:40 UTC | 12h 31m |
| 2026-07-17 | CMP704 | PTY → BOS | Jul 17, 04:39 UTC | Jul 17, 18:19 UTC | 13h 40m |
| 2026-07-16 | CMP423 | - | Jul 16, 21:15 UTC | Jul 17, 02:59 UTC | 5h 45m |
| 2026-07-16 | CMP894 | JFK → PTY | Jul 16, 17:54 UTC | Jul 16, 18:05 UTC | 10m |
| 2026-07-16 | CMP253 | - | Jul 16, 08:35 UTC | Jul 16, 13:40 UTC | 5h 5m |
| 2026-07-15 | CMP456 | - | Jul 15, 23:55 UTC | Jul 16, 05:10 UTC | 5h 15m |
| 2026-07-15 | CMP406 | - | Jul 15, 20:40 UTC | Jul 15, 20:50 UTC | 10m |
| 2026-07-15 | CMP405 | - | Jul 15, 18:25 UTC | Jul 15, 19:10 UTC | 45m |
| 2026-07-15 | CMP477 | - | Jul 15, 05:05 UTC | Jul 15, 12:55 UTC | 7h 50m |
| 2026-07-14 | CMP476 | - | Jul 14, 14:25 UTC | Jul 15, 01:05 UTC | 10h 39m |
| 2026-07-13 | CMP897 | - | Jul 13, 11:40 UTC | Jul 14, 03:55 UTC | 16h 15m |
| 2026-07-13 | CMP897 | - | Jul 13, 08:10 UTC | Jul 14, 03:55 UTC | 19h 45m |
| 2026-07-12 | CMP899 | - | Jul 12, 15:50 UTC | Jul 13, 06:40 UTC | 14h 50m |
| 2026-07-12 | CMP899 | - | Jul 12, 09:25 UTC | Jul 13, 06:40 UTC | 21h 15m |
| 2026-07-12 | CMP899 | - | Jul 12, 07:20 UTC | Jul 13, 06:40 UTC | 23h 20m |
| 2026-07-12 | CMP424 | - | Jul 12, 06:35 UTC | Jul 13, 02:45 UTC | 20h 10m |
| 2026-07-12 | CMP424 | - | Jul 12, 04:35 UTC | Jul 13, 02:45 UTC | 22h 10m |
| 2026-07-11 | CMP423 | - | Jul 11, 17:10 UTC | Jul 12, 02:50 UTC | 9h 40m |
| 2026-07-10 | CMP734 | - | Jul 10, 16:05 UTC | Jul 11, 10:20 UTC | 18h 16m |
| 2026-07-10 | CMP316 | - | Jul 10, 12:50 UTC | Jul 10, 14:35 UTC | 1h 45m |
| 2026-07-09 | CMP143 | - | Jul 9, 22:35 UTC | Jul 9, 22:45 UTC | 10m |
| 2026-07-09 | CMP142 | - | Jul 9, 20:15 UTC | Jul 9, 20:30 UTC | 15m |
| 2026-07-09 | CMP6236 | - | Jul 9, 05:50 UTC | Jul 9, 09:50 UTC | 4h 0m |
| 2026-07-08 | CMP9807 | - | Jul 8, 07:20 UTC | Jul 9, 01:45 UTC | 18h 25m |
| 2026-07-08 | CMP9807 | MTY → ORD | Jul 8, 07:05 UTC | Jul 9, 01:45 UTC | 18h 40m |
| 2026-07-07 | CMP175 | MCO → MTY | Jul 7, 19:55 UTC | Jul 8, 04:50 UTC | 8h 55m |
| 2026-07-07 | CMP867 | PTY → MCO | Jul 7, 15:05 UTC | Jul 7, 17:20 UTC | 2h 15m |
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-9807CMP page for operator, model, and routing details .