TCP SYN (JA4T)

65535_2-4-8-1-3_1382_6

first seen 2026-08-21 18:02 · last seen 2026-10-27 18:14 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 2/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1382
Window scale6

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d4312h1_c7886603b240_b26ce05bbdd66
t13d1515h1_8daaf6152771_0a20fe35d3a51
t13d1515h1_8daaf6152771_de4a06bb82e31
t13d1516h1_8daaf6152771_1a63afa7c4781

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.6
ge11nn13enus_9db22d02e17a_000000000000_0000000000002
ge11nn14enus_4a2973d235de_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:48+16:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:46+18:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:49+15:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:01
6:55+9:0:1382:65535,6:mss,sok,ts,nop,ws:flow:01
4:44+20:0:1382:65535,6:mss,sok,ts,nop,ws:df,id+:01
6:54+10:0:1382:65535,6:mss,sok,ts,nop,ws:flow:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
TN · Tunisia3
US · United States2
GB · United Kingdom1
AE · United Arab Emirates1
EG · Egypt1
PR · Puerto Rico1

Network (ASN)

fingerprintco-occurrences
AS5384 · Emirates Internet1
AS37693 · OOREDOO TUNISIE SA1
AS37705 · TOPNET1
AS8452 · TE-AS1
AS37492 · Orange Tunisie1
AS10396 · DATACOM CARIBE, INC.1
AS62585 · Messiah University1
AS19530 · State of North Dakota, ITD1
AS9142 · Internexus Networks Limited1

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.5
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.1