sensors Mode-S transponder
AB72B2
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N837DM · operated by ZIPLINE INTERNATIONAL INC
- Hex
- AB72B2
- Octal
- 52671262
- Decimal
- 11,236,018
- Country
- US
- Tail
- N837DM
- Type
- DRON
- Flights observed
- 54
- Distinct callsigns
- 11
- Country
- US
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address AB72B2 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 11 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| ETH3415 | Ethiopian Airlines | 5 | 2026-06-04 |
| ETH3904 | - | 3 | 2026-05-13 |
| ETH3693 | - | 3 | 2026-05-01 |
| ETH3645 | - | 3 | 2026-05-28 |
| ETH3644 | Ethiopian Airlines | 3 | 2026-05-21 |
| ETH3433 | Ethiopian Airlines | 3 | 2026-05-24 |
| ETH3916 | - | 2 | 2026-04-29 |
| ETH3632 | Ethiopian Airlines | 2 | 2026-06-06 |
| ETH3914 | - | 1 | 2026-05-16 |
| ETH3613 | Ethiopian Airlines | 1 | 2026-05-05 |
| ETH3432 | - | 1 | 2026-04-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-07 | - | - | Jun 7, 08:50 UTC | Jun 7, 09:15 UTC | 25m |
| 2026-06-06 | - | - | Jun 6, 19:24 UTC | Jun 7, 07:05 UTC | 11h 40m |
| 2026-06-06 | ETH3632 | ADD → SHJ | Jun 6, 05:20 UTC | Jun 6, 17:24 UTC | 12h 5m |
| 2026-06-06 | - | - | Jun 6, 02:35 UTC | Jun 6, 03:25 UTC | 50m |
| 2026-06-04 | - | - | Jun 4, 14:05 UTC | Jun 4, 18:40 UTC | 4h 35m |
| 2026-06-04 | ETH3415 | TLV → ADD | Jun 4, 04:40 UTC | Jun 4, 05:00 UTC | 20m |
| 2026-06-04 | - | - | Jun 4, 02:10 UTC | Jun 4, 02:30 UTC | 20m |
| 2026-06-03 | ETH3632 | ADD → SHJ | Jun 3, 02:40 UTC | Jun 3, 13:35 UTC | 10h 55m |
| 2026-06-02 | - | - | Jun 2, 23:35 UTC | Jun 3, 00:30 UTC | 55m |
| 2026-05-31 | - | - | May 31, 21:20 UTC | May 31, 21:55 UTC | 35m |
| 2026-05-31 | ETH3415 | TLV → ADD | May 31, 08:50 UTC | May 31, 19:35 UTC | 10h 45m |
| 2026-05-28 | ETH3645 | - | May 28, 08:55 UTC | May 28, 09:50 UTC | 55m |
| 2026-05-28 | - | - | May 28, 05:00 UTC | May 28, 06:50 UTC | 1h 50m |
| 2026-05-25 | ETH3415 | TLV → ADD | May 25, 08:30 UTC | May 25, 08:55 UTC | 25m |
| 2026-05-25 | - | - | May 25, 05:50 UTC | May 25, 06:25 UTC | 35m |
| 2026-05-24 | ETH3433 | BLR → ADD | May 24, 06:25 UTC | May 24, 06:35 UTC | 10m |
| 2026-05-24 | - | - | May 24, 04:25 UTC | May 24, 04:55 UTC | 30m |
| 2026-05-23 | - | - | May 23, 06:55 UTC | May 24, 04:55 UTC | 22h 1m |
| 2026-05-21 | ETH3645 | - | May 21, 20:25 UTC | May 21, 21:20 UTC | 55m |
| 2026-05-21 | ETH3644 | ADD → AMD | May 21, 05:45 UTC | May 21, 19:05 UTC | 13h 20m |
| 2026-05-21 | - | - | May 21, 03:45 UTC | May 21, 04:10 UTC | 25m |
| 2026-05-20 | - | - | May 20, 07:15 UTC | May 21, 04:10 UTC | 20h 55m |
| 2026-05-20 | - | - | May 20, 02:40 UTC | May 20, 07:30 UTC | 4h 51m |
| 2026-05-17 | ETH3645 | - | May 17, 20:40 UTC | May 17, 21:30 UTC | 50m |
| 2026-05-17 | - | - | May 17, 08:20 UTC | May 17, 18:45 UTC | 10h 25m |
| 2026-05-16 | ETH3914 | - | May 16, 15:05 UTC | May 17, 06:55 UTC | 15h 50m |
| 2026-05-14 | ETH3415 | TLV → ADD | May 14, 12:25 UTC | May 14, 12:50 UTC | 25m |
| 2026-05-13 | ETH3904 | - | May 13, 17:40 UTC | May 14, 10:40 UTC | 17h 0m |
| 2026-05-13 | - | - | May 13, 15:45 UTC | May 13, 16:10 UTC | 25m |
| 2026-05-11 | - | - | May 11, 02:10 UTC | May 11, 02:20 UTC | 10m |
| 2026-05-10 | - | - | May 10, 22:55 UTC | May 11, 00:54 UTC | 2h 0m |
| 2026-05-08 | ETH3644 | ADD → AMD | May 8, 14:20 UTC | May 8, 18:50 UTC | 4h 30m |
| 2026-05-07 | ETH3644 | ADD → AMD | May 7, 23:34 UTC | May 8, 18:50 UTC | 19h 15m |
| 2026-05-05 | ETH3613 | DXB → ADD | May 5, 10:50 UTC | May 5, 11:15 UTC | 25m |
| 2026-05-05 | - | - | May 5, 07:35 UTC | May 5, 08:10 UTC | 35m |
| 2026-05-03 | ETH3415 | TLV → ADD | May 3, 09:55 UTC | May 3, 10:20 UTC | 25m |
| 2026-05-03 | - | - | May 3, 07:40 UTC | May 3, 08:20 UTC | 40m |
| 2026-05-01 | ETH3693 | - | May 1, 05:30 UTC | May 1, 05:55 UTC | 25m |
| 2026-05-01 | - | - | May 1, 02:35 UTC | May 1, 03:10 UTC | 35m |
| 2026-04-29 | ETH3916 | - | Apr 29, 17:25 UTC | Apr 30, 00:10 UTC | 6h 44m |
| 2026-04-28 | ETH3916 | - | Apr 28, 21:19 UTC | Apr 29, 17:35 UTC | 20h 16m |
| 2026-04-28 | - | - | Apr 28, 18:05 UTC | Apr 28, 18:55 UTC | 50m |
| 2026-04-26 | ETH3433 | BLR → ADD | Apr 26, 02:50 UTC | Apr 26, 03:15 UTC | 25m |
| 2026-04-26 | ETH3432 | - | Apr 26, 00:30 UTC | Apr 26, 00:55 UTC | 25m |
| 2026-04-23 | ETH3433 | BLR → ADD | Apr 23, 01:10 UTC | Apr 23, 01:35 UTC | 25m |
| 2026-04-22 | - | - | Apr 22, 22:20 UTC | Apr 22, 22:40 UTC | 20m |
| 2026-04-21 | ETH3904 | - | Apr 21, 19:25 UTC | Apr 21, 19:50 UTC | 25m |
| 2026-04-21 | - | - | Apr 21, 16:50 UTC | Apr 21, 17:15 UTC | 25m |
| 2026-04-20 | ETH3693 | - | Apr 20, 06:20 UTC | Apr 20, 09:35 UTC | 3h 15m |
| 2026-04-19 | ETH3693 | - | Apr 19, 11:20 UTC | Apr 20, 09:35 UTC | 22h 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 N837DM page for operator, model, and routing details .