sensors Mode-S transponder
484371
ICAO 24-bit transponder address · allocated to Netherlands
Currently assigned to PH-BQK · BOEING 777-200
- Hex
- 484371
- Octal
- 22041561
- Decimal
- 4,735,857
- Country
- NL
- Tail
- PH-BQK
- Type
- B772
- Flights observed
- 87
- Distinct callsigns
- 20
- Country
- NL
- Last broadcast
- 15d ago
Last known position
Country allocation
The ICAO 24-bit address 484371 falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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 |
|---|---|---|---|
| KLM701 | KLM Royal Dutch Airlines | 11 | 2026-04-19 |
| KLM702 | KLM Royal Dutch Airlines | 8 | 2026-04-19 |
| KLM569 | KLM Royal Dutch Airlines | 8 | 2026-05-13 |
| KLM661 | KLM Royal Dutch Airlines | 5 | 2026-05-14 |
| KLM192 | KLM Royal Dutch Airlines | 5 | 2026-05-14 |
| KLM877 | KLM Royal Dutch Airlines | 4 | 2026-05-11 |
| KLM686 | KLM Royal Dutch Airlines | 4 | 2026-05-08 |
| KLM636 | KLM Royal Dutch Airlines | 4 | 2026-05-06 |
| KLM635 | KLM Royal Dutch Airlines | 4 | 2026-05-05 |
| KLM878 | KLM Royal Dutch Airlines | 3 | 2026-04-15 |
| KLM844 | KLM Royal Dutch Airlines | 3 | 2026-05-09 |
| KLM843 | KLM Royal Dutch Airlines | 3 | 2026-05-08 |
| KLM685 | KLM Royal Dutch Airlines | 3 | 2026-05-07 |
| KLM888 | KLM Royal Dutch Airlines | 2 | 2026-05-10 |
| KLM887 | KLM Royal Dutch Airlines | 2 | 2026-05-10 |
| KLM880 | KLM Royal Dutch Airlines | 2 | 2026-05-12 |
| KLM808 | KLM Royal Dutch Airlines | 2 | 2026-04-30 |
| KLM807 | KLM Royal Dutch Airlines | 2 | 2026-04-30 |
| KLM757 | KLM Royal Dutch Airlines | 2 | 2026-04-17 |
| KLM280 | KLM Royal Dutch Airlines | 2 | 2026-05-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-14 | KLM192 | IAH → AMS | May 14, 20:45 UTC | May 15, 05:35 UTC | 8h 50m |
| 2026-05-14 | KLM661 | AMS → IAH | May 14, 08:30 UTC | May 14, 18:00 UTC | 9h 30m |
| 2026-05-13 | KLM569 | DAR → AMS | May 13, 10:20 UTC | May 14, 05:30 UTC | 19h 10m |
| 2026-05-13 | KLM569 | DAR → AMS | May 13, 08:45 UTC | May 14, 05:30 UTC | 20h 45m |
| 2026-05-12 | KLM880 | BLR → AMS | May 12, 21:15 UTC | May 13, 06:05 UTC | 8h 50m |
| 2026-05-12 | KLM880 | BLR → AMS | May 12, 19:55 UTC | May 12, 20:05 UTC | 10m |
| 2026-05-12 | KLM879 | AMS → BLR | May 12, 08:30 UTC | May 12, 17:45 UTC | 9h 15m |
| 2026-05-11 | KLM877 | AMS → BOM | May 11, 10:20 UTC | May 12, 05:50 UTC | 19h 30m |
| 2026-05-10 | KLM888 | HKG → AMS | May 10, 22:45 UTC | May 11, 03:35 UTC | 4h 50m |
| 2026-05-10 | KLM888 | HKG → AMS | May 10, 14:34 UTC | May 10, 14:49 UTC | 15m |
| 2026-05-10 | KLM887 | AMS → HKG | May 10, 06:40 UTC | May 10, 07:04 UTC | 25m |
| 2026-05-09 | KLM887 | AMS → HKG | May 9, 19:35 UTC | May 10, 04:50 UTC | 9h 15m |
| 2026-05-09 | KLM844 | BKK → AMS | May 9, 05:25 UTC | May 9, 17:10 UTC | 11h 45m |
| 2026-05-08 | KLM843 | BKK → TPE | May 8, 15:40 UTC | May 9, 02:15 UTC | 10h 35m |
| 2026-05-08 | KLM686 | MEX → AMS | May 8, 03:39 UTC | May 8, 13:15 UTC | 9h 35m |
| 2026-05-07 | KLM685 | AMS → MEX | May 7, 12:40 UTC | May 8, 00:09 UTC | 11h 30m |
| 2026-05-06 | KLM636 | LAS → AMS | May 6, 03:45 UTC | May 6, 13:25 UTC | 9h 40m |
| 2026-05-05 | KLM635 | AMS → LAS | May 5, 15:25 UTC | May 6, 01:30 UTC | 10h 5m |
| 2026-05-05 | KLM100 | AMS → CHS | May 5, 02:01 UTC | May 5, 08:55 UTC | 6h 55m |
| 2026-05-04 | KLM695 | AMS → YYZ | May 4, 16:05 UTC | May 4, 23:35 UTC | 7h 31m |
| 2026-05-04 | KLM636 | LAS → AMS | May 4, 03:35 UTC | May 4, 13:25 UTC | 9h 50m |
| 2026-05-03 | KLM635 | AMS → LAS | May 3, 15:10 UTC | May 4, 01:24 UTC | 10h 15m |
| 2026-05-03 | KLM686 | MEX → AMS | May 3, 03:35 UTC | May 3, 12:30 UTC | 8h 55m |
| 2026-05-03 | KLM686 | MEX → AMS | May 3, 02:40 UTC | May 3, 02:50 UTC | 10m |
| 2026-05-02 | KLM685 | AMS → MEX | May 2, 12:40 UTC | May 2, 23:45 UTC | 11h 5m |
| 2026-05-01 | KLM280 | EBB → AMS | May 1, 10:20 UTC | May 2, 05:35 UTC | 19h 15m |
| 2026-05-01 | KLM280 | EBB → AMS | May 1, 08:30 UTC | May 2, 05:35 UTC | 21h 5m |
| 2026-04-30 | KLM808 | TPE → AMS | Apr 30, 16:20 UTC | May 1, 06:00 UTC | 13h 40m |
| 2026-04-30 | KLM808 | TPE → AMS | Apr 30, 12:50 UTC | Apr 30, 14:30 UTC | 1h 40m |
| 2026-04-30 | KLM807 | AMS → MNL | Apr 30, 08:45 UTC | Apr 30, 10:35 UTC | 1h 50m |
| 2026-04-29 | KLM807 | AMS → MNL | Apr 29, 18:20 UTC | Apr 30, 06:45 UTC | 12h 24m |
| 2026-04-29 | KLM636 | LAS → AMS | Apr 29, 03:49 UTC | Apr 29, 13:30 UTC | 9h 41m |
| 2026-04-28 | KLM635 | AMS → LAS | Apr 28, 15:20 UTC | Apr 29, 01:35 UTC | 10h 15m |
| 2026-04-27 | KLM604 | LAX → AMS | Apr 27, 23:50 UTC | Apr 28, 09:50 UTC | 10h 0m |
| 2026-04-27 | KLM603 | AMS → LAX | Apr 27, 11:10 UTC | Apr 27, 21:40 UTC | 10h 30m |
| 2026-04-26 | KLM844 | BKK → AMS | Apr 26, 05:40 UTC | Apr 26, 17:25 UTC | 11h 45m |
| 2026-04-25 | KLM843 | BKK → TPE | Apr 25, 15:35 UTC | Apr 26, 02:00 UTC | 10h 25m |
| 2026-04-25 | KLM610 | SLC → AMS | Apr 25, 03:50 UTC | Apr 25, 12:45 UTC | 8h 55m |
| 2026-04-24 | KLM609 | AMS → SLC | Apr 24, 16:00 UTC | Apr 25, 01:25 UTC | 9h 25m |
| 2026-04-24 | KLM636 | LAS → AMS | Apr 24, 03:55 UTC | Apr 24, 13:25 UTC | 9h 30m |
| 2026-04-23 | KLM635 | AMS → LAS | Apr 23, 15:50 UTC | Apr 24, 01:50 UTC | 9h 59m |
| 2026-04-22 | KLM844 | BKK → AMS | Apr 22, 05:30 UTC | Apr 22, 17:10 UTC | 11h 40m |
| 2026-04-21 | KLM843 | BKK → TPE | Apr 21, 15:51 UTC | Apr 22, 02:25 UTC | 10h 35m |
| 2026-04-21 | KLM686 | MEX → AMS | Apr 21, 03:15 UTC | Apr 21, 13:35 UTC | 10h 20m |
| 2026-04-20 | KLM685 | AMS → MEX | Apr 20, 12:50 UTC | Apr 20, 23:55 UTC | 11h 5m |
| 2026-04-19 | KLM702 | EZE → AMS | Apr 19, 22:00 UTC | Apr 20, 06:50 UTC | 8h 50m |
| 2026-04-19 | KLM702 | EZE → AMS | Apr 19, 18:15 UTC | Apr 19, 18:35 UTC | 20m |
| 2026-04-19 | KLM702 | EZE → AMS | Apr 19, 15:40 UTC | Apr 19, 16:10 UTC | 30m |
| 2026-04-19 | KLM702 | EZE → AMS | Apr 19, 14:45 UTC | Apr 19, 14:55 UTC | 10m |
| 2026-04-19 | KLM701 | AMS → EZE | Apr 19, 11:35 UTC | Apr 19, 12:00 UTC | 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 PH-BQK page for operator, model, and routing details .