Apparatus

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sensors Mode-S transponder

01023F

ICAO 24-bit transponder address · allocated to Egypt

Currently assigned to SU-RSB · BOEING 737-800

Hex
01023F
Octal
00201077
Decimal
66,111
Country
EG
Tail
SU-RSB
Type
B738
Broadcasting now · callsign RSX317 · 36,975 ft
Flights observed
155
Distinct callsigns
20
Country
EG
Last broadcast
1h ago

Current position

01023F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 01023F falls within the block assigned to Egypt (EG) by ICAO Annex 10, Volume III. Every aircraft registered in Egypt 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
RSX337 Red Sea Airlines 22 2026-05-27
RSX311 Red Sea Airlines 19 2026-05-25
RSX317 - 14 2026-05-22
RSX327 Red Sea Airlines 13 2026-05-14
RSX331 - 10 2026-05-19
RSX328 Red Sea Airlines 10 2026-05-11
RSX312 Red Sea Airlines 10 2026-05-18
RSX338 Red Sea Airlines 9 2026-05-27
RSX314 Red Sea Airlines 9 2026-05-24
RSX318 - 6 2026-05-23
RSX313 Red Sea Airlines 6 2026-05-17
RSX325 - 5 2026-05-28
RSX315 Red Sea Airlines 4 2026-04-25
RSX332 - 3 2026-04-22
RSX326 - 3 2026-05-22
RSX316 Red Sea Airlines 3 2026-04-25
RSX336 Red Sea Airlines 2 2026-05-29
RSX335 Red Sea Airlines 2 2026-05-15
RSX121 - 2 2026-05-13
RSX6008 - 1 2026-04-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RSX336 KRR → SSH May 29, 17:20 UTCMay 29, 21:45 UTC4h 25m
2026-05-28 RSX325 - May 28, 18:50 UTCMay 29, 13:25 UTC18h 35m
2026-05-28 RSX325 - May 28, 03:50 UTCMay 29, 03:45 UTC23h 55m
2026-05-28 RSX325 - May 28, 01:50 UTCMay 28, 23:20 UTC21h 30m
2026-05-28 RSX325 - May 28, 01:35 UTCMay 28, 23:20 UTC21h 45m
2026-05-27 RSX338 VKO → SSH May 27, 19:50 UTCMay 28, 19:45 UTC23h 55m
2026-05-27 RSX337 SSH → VKO May 27, 17:20 UTCMay 28, 04:50 UTC11h 30m
2026-05-25 RSX311 SSH → VKO May 25, 14:20 UTCMay 26, 01:34 UTC11h 15m
2026-05-24 RSX338 VKO → SSH May 24, 23:20 UTCMay 25, 11:20 UTC12h 0m
2026-05-24 RSX337 SSH → VKO May 24, 07:50 UTCMay 25, 03:50 UTC20h 0m
2026-05-24 RSX314 VKO → SSH May 24, 05:50 UTCMay 25, 03:50 UTC22h 0m
2026-05-24 RSX314 VKO → SSH May 24, 05:40 UTCMay 25, 03:45 UTC22h 5m
2026-05-23 RSX314 VKO → SSH May 23, 21:25 UTCMay 24, 08:50 UTC11h 25m
2026-05-23 RSX314 VKO → SSH May 23, 07:50 UTCMay 24, 07:45 UTC23h 55m
2026-05-23 RSX318 - May 23, 07:30 UTCMay 24, 05:45 UTC22h 16m
2026-05-22 RSX318 - May 22, 23:50 UTCMay 23, 23:30 UTC23h 40m
2026-05-22 RSX317 - May 22, 21:50 UTCMay 23, 21:45 UTC23h 55m
2026-05-22 RSX317 - May 22, 21:25 UTCMay 23, 09:15 UTC11h 49m
2026-05-22 RSX326 - May 22, 04:10 UTCMay 22, 18:40 UTC14h 30m
2026-05-21 RSX326 - May 21, 21:50 UTCMay 22, 18:40 UTC20h 50m
2026-05-21 RSX326 - May 21, 19:50 UTCMay 22, 18:40 UTC22h 50m
2026-05-21 RSX325 - May 21, 18:45 UTCMay 22, 17:45 UTC23h 0m
2026-05-19 RSX331 - May 19, 18:00 UTCMay 20, 05:40 UTC11h 41m
2026-05-19 RSX331 - May 19, 01:50 UTCMay 19, 21:20 UTC19h 30m
2026-05-18 RSX312 VKO → SSH May 18, 23:50 UTCMay 19, 21:20 UTC21h 30m
2026-05-18 RSX312 VKO → SSH May 18, 22:20 UTCMay 19, 21:20 UTC23h 0m
2026-05-18 RSX311 SSH → VKO May 18, 14:15 UTCMay 19, 01:55 UTC11h 39m
2026-05-18 RSX311 SSH → VKO May 18, 01:50 UTCMay 19, 01:45 UTC23h 54m
2026-05-17 RSX311 SSH → VKO May 17, 23:50 UTCMay 18, 23:45 UTC23h 54m
2026-05-17 RSX337 SSH → VKO May 17, 22:55 UTCMay 18, 18:30 UTC19h 34m
2026-05-17 RSX337 SSH → VKO May 17, 09:20 UTCMay 18, 03:15 UTC17h 55m
2026-05-17 RSX337 SSH → VKO May 17, 03:50 UTCMay 18, 03:15 UTC23h 25m
2026-05-17 RSX314 VKO → SSH May 17, 01:50 UTCMay 18, 01:45 UTC23h 55m
2026-05-17 RSX313 SSH → VKO May 17, 00:40 UTCMay 17, 23:45 UTC23h 5m
2026-05-16 RSX313 SSH → VKO May 16, 09:51 UTCMay 17, 09:45 UTC23h 55m
2026-05-16 RSX318 - May 16, 07:51 UTCMay 17, 05:10 UTC21h 20m
2026-05-15 RSX317 - May 15, 17:55 UTCMay 16, 06:16 UTC12h 21m
2026-05-15 RSX335 SSH → KRR May 15, 12:00 UTCMay 15, 14:15 UTC2h 15m
2026-05-14 RSX327 SSH → LED May 14, 17:05 UTCMay 15, 04:50 UTC11h 45m
2026-05-14 RSX327 SSH → LED May 14, 05:50 UTCMay 15, 04:50 UTC23h 0m
2026-05-14 RSX327 SSH → LED May 14, 04:00 UTCMay 15, 03:45 UTC23h 45m
2026-05-14 RSX327 SSH → LED May 14, 00:10 UTCMay 14, 21:50 UTC21h 40m
2026-05-13 RSX121 - May 13, 05:00 UTCMay 14, 00:45 UTC19h 45m
2026-05-13 RSX121 - May 13, 02:10 UTCMay 14, 00:45 UTC22h 35m
2026-05-12 RSX331 - May 12, 17:50 UTCMay 12, 21:01 UTC3h 10m
2026-05-11 RSX331 - May 11, 20:55 UTCMay 12, 19:45 UTC22h 50m
2026-05-11 RSX328 LED → SSH May 11, 05:05 UTCMay 11, 21:25 UTC16h 21m
2026-05-10 RSX328 LED → SSH May 10, 23:50 UTCMay 11, 21:25 UTC21h 36m
2026-05-10 RSX327 SSH → LED May 10, 22:05 UTCMay 11, 21:25 UTC23h 21m
2026-05-10 RSX327 SSH → LED May 10, 20:25 UTCMay 11, 13:10 UTC16h 45m

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 SU-RSB page for operator, model, and routing details .

Mode-S 01023F frequently asked

What is Mode-S code 01023F?
01023F is an ICAO 24-bit transponder address. Allocated to Egypt. Assigned to SU-RSB.
Where is Mode-S 01023F registered?
Mode-S code 01023F is allocated to Egypt (EG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 01023F broadcasting right now?
Yes. Mode-S 01023F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 01023F, octal 00201077, decimal 66,111.
What flights does 01023F operate?
Mode-S 01023F has broadcast 20 distinct callsigns, including RSX337, RSX311, RSX317, RSX327, RSX331.