sensors Mode-S transponder
0C21F7
ICAO 24-bit transponder address · allocated to Suriname
Currently assigned to HP-2011UCG · BOEING 737-300
- Hex
- 0C21F7
- Octal
- 03020767
- Decimal
- 795,127
- Country
- SR
- Tail
- HP-2011UCG
- Type
- B733
- Flights observed
- 115
- Distinct callsigns
- 20
- Country
- SR
- Last broadcast
- Jul 25, 15:05 UTC
Last known position
Country allocation
The ICAO 24-bit address 0C21F7 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 |
|---|---|---|---|
| UCG470 | Uniworld Air Cargo | 27 | 2026-07-18 |
| UCG471 | - | 18 | 2026-07-21 |
| UCG953 | - | 8 | 2026-07-23 |
| UCG472 | - | 8 | 2026-07-17 |
| UCG954 | Uniworld Air Cargo | 7 | 2026-07-24 |
| UCG253 | - | 7 | 2026-07-25 |
| UCG972 | Uniworld Air Cargo | 5 | 2026-07-24 |
| UCG473 | - | 5 | 2026-07-17 |
| UCG970 | Uniworld Air Cargo | 4 | 2026-07-22 |
| UCG843 | Uniworld Air Cargo | 3 | 2026-04-22 |
| UCG795 | - | 3 | 2026-05-30 |
| UCG700 | - | 3 | 2026-07-24 |
| UCG247 | - | 3 | 2026-05-23 |
| UCG210 | Uniworld Air Cargo | 3 | 2026-05-30 |
| UCG249 | Uniworld Air Cargo | 2 | 2026-05-25 |
| UCG193 | - | 2 | 2026-07-09 |
| UCG192 | - | 2 | 2026-07-07 |
| UCG974 | - | 1 | 2026-04-27 |
| UCG794 | - | 1 | 2026-05-16 |
| UCG291 | - | 1 | 2026-04-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | UCG253 | - | Jul 25, 14:45 UTC | Jul 25, 15:05 UTC | 20m |
| 2026-07-24 | UCG700 | - | Jul 24, 17:35 UTC | Jul 25, 10:15 UTC | 16h 40m |
| 2026-07-24 | UCG700 | - | Jul 24, 12:35 UTC | Jul 25, 10:15 UTC | 21h 40m |
| 2026-07-24 | UCG700 | - | Jul 24, 08:55 UTC | Jul 24, 22:05 UTC | 13h 10m |
| 2026-07-24 | UCG972 | CUR → PTY | Jul 24, 01:50 UTC | Jul 24, 22:05 UTC | 20h 15m |
| 2026-07-24 | UCG954 | AUA → CUR | Jul 24, 00:20 UTC | Jul 24, 00:30 UTC | 10m |
| 2026-07-23 | UCG953 | - | Jul 23, 11:35 UTC | Jul 23, 11:55 UTC | 20m |
| 2026-07-22 | UCG970 | PTY → CUR | Jul 22, 19:10 UTC | Jul 23, 10:45 UTC | 15h 35m |
| 2026-07-22 | UCG970 | PTY → CUR | Jul 22, 15:30 UTC | Jul 23, 10:45 UTC | 19h 15m |
| 2026-07-21 | UCG471 | - | Jul 21, 18:20 UTC | Jul 22, 15:45 UTC | 21h 25m |
| 2026-07-21 | UCG213 | BOG → PTY | Jul 21, 03:50 UTC | Jul 21, 18:40 UTC | 14h 50m |
| 2026-07-21 | - | - | Jul 21, 01:20 UTC | Jul 21, 01:50 UTC | 30m |
| 2026-07-18 | UCG470 | PTY → PTY | Jul 18, 08:50 UTC | Jul 18, 22:00 UTC | 13h 10m |
| 2026-07-17 | UCG473 | - | Jul 17, 23:50 UTC | Jul 18, 22:00 UTC | 22h 11m |
| 2026-07-17 | UCG473 | - | Jul 17, 23:39 UTC | Jul 18, 21:45 UTC | 22h 6m |
| 2026-07-17 | UCG472 | - | Jul 17, 19:49 UTC | Jul 18, 18:10 UTC | 22h 21m |
| 2026-07-17 | UCG470 | PTY → PTY | Jul 17, 12:19 UTC | Jul 18, 09:15 UTC | 20h 56m |
| 2026-07-17 | UCG471 | - | Jul 17, 08:49 UTC | Jul 18, 00:00 UTC | 15h 10m |
| 2026-07-17 | UCG471 | - | Jul 17, 01:49 UTC | Jul 18, 00:00 UTC | 22h 10m |
| 2026-07-17 | UCG972 | - | Jul 17, 01:29 UTC | Jul 17, 23:45 UTC | 22h 15m |
| 2026-07-17 | UCG954 | AUA → CUR | Jul 17, 00:10 UTC | Jul 17, 00:20 UTC | 10m |
| 2026-07-16 | UCG953 | - | Jul 16, 12:05 UTC | Jul 16, 12:25 UTC | 20m |
| 2026-07-15 | UCG472 | - | Jul 15, 18:20 UTC | Jul 16, 10:50 UTC | 16h 30m |
| 2026-07-15 | UCG471 | - | Jul 15, 13:05 UTC | Jul 16, 10:50 UTC | 21h 45m |
| 2026-07-15 | UCG471 | - | Jul 15, 09:20 UTC | Jul 15, 22:40 UTC | 13h 20m |
| 2026-07-14 | UCG471 | - | Jul 14, 20:50 UTC | Jul 15, 18:40 UTC | 21h 49m |
| 2026-07-14 | UCG471 | - | Jul 14, 17:10 UTC | Jul 15, 13:30 UTC | 20h 19m |
| 2026-07-14 | UCG471 | - | Jul 14, 12:40 UTC | Jul 15, 09:40 UTC | 20h 59m |
| 2026-07-14 | UCG471 | - | Jul 14, 08:55 UTC | Jul 14, 21:10 UTC | 12h 15m |
| 2026-07-13 | UCG470 | - | Jul 13, 13:05 UTC | Jul 14, 09:15 UTC | 20h 10m |
| 2026-07-12 | UCG473 | - | Jul 12, 17:55 UTC | Jul 13, 13:25 UTC | 19h 30m |
| 2026-07-12 | UCG472 | - | Jul 12, 14:20 UTC | Jul 13, 13:25 UTC | 23h 5m |
| 2026-07-12 | UCG470 | - | Jul 12, 05:55 UTC | Jul 12, 18:20 UTC | 12h 25m |
| 2026-07-11 | UCG473 | - | Jul 11, 22:20 UTC | Jul 12, 18:20 UTC | 20h 0m |
| 2026-07-11 | UCG473 | - | Jul 11, 18:25 UTC | Jul 12, 14:40 UTC | 20h 15m |
| 2026-07-11 | UCG471 | - | Jul 11, 13:00 UTC | Jul 12, 09:55 UTC | 20h 55m |
| 2026-07-11 | UCG470 | - | Jul 11, 09:00 UTC | Jul 12, 06:15 UTC | 21h 15m |
| 2026-07-10 | UCG470 | - | Jul 10, 17:50 UTC | Jul 11, 13:15 UTC | 19h 25m |
| 2026-07-10 | UCG470 | - | Jul 10, 14:20 UTC | Jul 11, 09:25 UTC | 19h 6m |
| 2026-07-10 | UCG470 | - | Jul 10, 09:50 UTC | Jul 11, 09:25 UTC | 23h 35m |
| 2026-07-10 | UCG972 | - | Jul 10, 01:35 UTC | Jul 10, 18:10 UTC | 16h 35m |
| 2026-07-10 | UCG954 | - | Jul 10, 00:15 UTC | Jul 10, 00:25 UTC | 10m |
| 2026-07-09 | UCG953 | CUR → AUA | Jul 9, 12:10 UTC | Jul 9, 12:25 UTC | 15m |
| 2026-07-09 | UCG193 | - | Jul 9, 03:25 UTC | Jul 9, 11:05 UTC | 7h 40m |
| 2026-07-07 | UCG192 | - | Jul 7, 14:05 UTC | Jul 7, 14:30 UTC | 25m |
| 2026-07-04 | UCG470 | - | Jul 4, 08:20 UTC | Jul 4, 19:35 UTC | 11h 15m |
| 2026-07-03 | UCG470 | - | Jul 3, 18:55 UTC | Jul 4, 16:05 UTC | 21h 10m |
| 2026-07-03 | UCG470 | - | Jul 3, 14:50 UTC | Jul 4, 12:40 UTC | 21h 50m |
| 2026-07-03 | UCG470 | - | Jul 3, 09:55 UTC | Jul 4, 08:40 UTC | 22h 45m |
| 2026-07-03 | UCG472 | - | Jul 3, 01:50 UTC | Jul 3, 19:15 UTC | 17h 25m |
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-2011UCG page for operator, model, and routing details .