Apparatus

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sensors Mode-S transponder

ABFDF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N872CB · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
ABFDF8
Octal
52776770
Decimal
11,271,672
Country
US
Tail
N872CB
Type
B38M
Transponder active on ground
Flights observed
573
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ABFDF8.

Country allocation

The ICAO 24-bit address ABFDF8 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 20 distinct

Callsign Airline Flights Last seen
SWA343 - 6 2026-06-29
SWA3274 - 5 2026-07-10
SWA2879 - 5 2026-07-13
SWA2848 Southwest Airlines 5 2026-05-06
SWA228 Southwest Airlines 5 2026-06-14
SWA4535 Southwest Airlines 4 2026-06-15
SWA4238 Southwest Airlines 4 2026-05-26
SWA3781 - 4 2026-07-06
SWA377 - 4 2026-07-09
SWA3011 Southwest Airlines 4 2026-04-28
SWA3 Southwest Airlines 4 2026-04-18
SWA2691 Southwest Airlines 4 2026-05-06
SWA2214 Southwest Airlines 4 2026-04-26
SWA1987 Southwest Airlines 4 2026-05-29
SWA188 Southwest Airlines 4 2026-07-08
SWA1851 - 4 2026-07-09
SWA808 Southwest Airlines 3 2026-05-05
SWA512 - 3 2026-07-13
SWA479 Southwest Airlines 3 2026-06-22
SWA4533 Southwest Airlines 3 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4405 - Jul 14, 02:35 UTCJul 14, 04:00 UTC1h 25m
2026-07-13 SWA4489 LAS → DAL Jul 13, 22:45 UTCJul 14, 01:30 UTC2h 45m
2026-07-13 SWA4278 SMF → LAS Jul 13, 20:10 UTCJul 13, 21:15 UTC1h 5m
2026-07-13 SWA4007 - Jul 13, 18:35 UTCJul 13, 19:00 UTC25m
2026-07-13 SWA4007 - Jul 13, 17:55 UTCJul 13, 18:05 UTC10m
2026-07-13 SWA4135 SAN → BOI Jul 13, 15:11 UTCJul 13, 16:48 UTC1h 37m
2026-07-13 SWA4135 - Jul 13, 15:15 UTCJul 13, 16:50 UTC1h 35m
2026-07-13 SWA512 - Jul 13, 08:10 UTCJul 13, 13:20 UTC5h 10m
2026-07-13 SWA2879 - Jul 13, 01:35 UTCJul 13, 01:50 UTC15m
2026-07-12 SWA2879 OAK → HNL Jul 12, 21:00 UTCJul 13, 01:46 UTC4h 46m
2026-07-12 SWA2879 - Jul 12, 21:00 UTCJul 12, 21:35 UTC35m
2026-07-12 SWA4119 SAN → OAK Jul 12, 16:15 UTCJul 12, 17:15 UTC1h 0m
2026-07-12 SWA4119 SAN → OAK Jul 12, 16:15 UTCJul 12, 17:14 UTC59m
2026-07-12 SWA4119 - Jul 12, 14:10 UTCJul 12, 15:01 UTC50m
2026-07-12 SWA672 - Jul 12, 10:45 UTCJul 12, 12:01 UTC1h 15m
2026-07-11 SWA3060 - Jul 11, 21:00 UTCJul 11, 21:35 UTC35m
2026-07-11 SWA1718 LAS → OAK Jul 11, 18:25 UTCJul 11, 19:30 UTC1h 5m
2026-07-11 SWA1915 - Jul 11, 07:05 UTCJul 11, 12:15 UTC5h 10m
2026-07-10 SWA3274 - Jul 10, 22:45 UTCJul 10, 23:00 UTC15m
2026-07-10 SWA3274 - Jul 10, 16:50 UTCJul 10, 18:05 UTC1h 15m
2026-07-10 SWA3447 - Jul 10, 14:15 UTCJul 10, 15:05 UTC50m
2026-07-10 SWA2356 - Jul 10, 10:55 UTCJul 10, 11:35 UTC40m
2026-07-10 SWA1931 - Jul 10, 00:20 UTCJul 10, 00:40 UTC20m
2026-07-09 SWA3094 - Jul 9, 22:10 UTCJul 9, 22:35 UTC25m
2026-07-09 SWA1851 - Jul 9, 20:00 UTCJul 9, 20:20 UTC20m
2026-07-09 SWA1851 HNL → OGG Jul 9, 19:59 UTCJul 9, 20:23 UTC24m
2026-07-09 SWA2509 - Jul 9, 18:35 UTCJul 9, 18:45 UTC10m
2026-07-09 SWA2509 LIH → HNL Jul 9, 18:20 UTCJul 9, 18:39 UTC19m
2026-07-09 SWA1919 - Jul 9, 16:30 UTCJul 9, 16:45 UTC15m
2026-07-09 SWA1919 HNL → LIH Jul 9, 16:30 UTCJul 9, 16:52 UTC22m
2026-07-09 SWA377 LAX → HNL Jul 9, 01:54 UTCJul 9, 07:19 UTC5h 25m
2026-07-08 SWA188 BWI → FLL Jul 8, 20:40 UTCJul 9, 00:15 UTC3h 35m
2026-07-08 SWA188 BWI → FLL Jul 8, 16:50 UTCJul 8, 19:15 UTC2h 25m
2026-07-08 SWA990 - Jul 8, 13:20 UTCJul 8, 15:30 UTC2h 10m
2026-07-08 SWA776 - Jul 8, 10:15 UTCJul 8, 12:05 UTC1h 50m
2026-07-08 SWA776 TPA → PIT Jul 8, 10:11 UTCJul 8, 12:05 UTC1h 54m
2026-07-08 SWA611 - Jul 8, 01:35 UTCJul 8, 03:50 UTC2h 15m
2026-07-07 SWA2539 AUS → MCI Jul 7, 23:15 UTCJul 8, 00:42 UTC1h 27m
2026-07-07 SWA2539 - Jul 7, 23:15 UTCJul 8, 00:45 UTC1h 30m
2026-07-07 SWA3689 - Jul 7, 19:10 UTCJul 7, 21:40 UTC2h 30m
2026-07-07 SWA3689 SNA → AUS Jul 7, 19:08 UTCJul 7, 21:35 UTC2h 27m
2026-07-07 SWA3626 - Jul 7, 16:50 UTCJul 7, 17:50 UTC1h 0m
2026-07-07 SWA2543 LAS → SJC Jul 7, 14:40 UTCJul 7, 15:35 UTC55m
2026-07-07 SWA3150 - Jul 7, 12:45 UTCJul 7, 13:30 UTC45m
2026-07-07 SWA3150 ONT → LAS Jul 7, 12:43 UTCJul 7, 13:27 UTC44m
2026-07-06 SWA3342 - Jul 6, 22:40 UTCJul 7, 03:30 UTC4h 50m
2026-07-06 SWA3781 - Jul 6, 20:20 UTCJul 6, 20:45 UTC25m
2026-07-06 SWA3781 - Jul 6, 15:35 UTCJul 6, 16:15 UTC40m
2026-07-06 SWA3165 - Jul 6, 13:10 UTCJul 6, 14:10 UTC1h 0m
2026-07-06 SWA3165 ONT → SMF Jul 6, 13:06 UTCJul 6, 14:05 UTC59m

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 N872CB page for operator, model, and routing details .

Mode-S ABFDF8 frequently asked

What is Mode-S code ABFDF8?
ABFDF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N872CB.
Where is Mode-S ABFDF8 registered?
Mode-S code ABFDF8 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is ABFDF8 broadcasting right now?
Mode-S ABFDF8 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFDF8, octal 52776770, decimal 11,271,672.
What flights does ABFDF8 operate?
Mode-S ABFDF8 has broadcast 20 distinct callsigns, including SWA343, SWA3274, SWA2879, SWA2848, SWA228.