TCP SYN (JA4T)

65535_2-4-8-1-3_1410_9

first seen 2026-07-23 18:32 · last seen 2026-09-05 14:00 · JSON

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
MSS1410
Window scale9

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
t13d4412h1_fd39b124ee10_58ed7828516f4
t13d1515h1_8daaf6152771_de4a06bb82e32
t13d1515h1_8daaf6152771_0a20fe35d3a52
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.4
ge11nn13enus_9db22d02e17a_000000000000_0000000000003
ge11nn14enus_4a2973d235de_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:01
4:40+24:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+:01
4:43+21:0:1410:65535,9:mss,sok,ts,nop,ws:df,id+: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/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3409.85 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1664.3 Safari/537.361

Country

fingerprintco-occurrences
BD · Bangladesh4
PK · Pakistan3
ZA · South Africa1
KW · Kuwait1

Network (ASN)

fingerprintco-occurrences
AS17557 · Pakistan Telecommunication Company Limited3
AS152850 · Chittagong net solution1
AS134732 · Dot Internet1
AS42961 · Mobile Telecommunications Company K.S.C.P.1
AS138004 · MIR INFO SYSTEMS LTD.1
AS36937 · Liquid Telecommunications South Africa (Pty) Ltd1
AS58736 · Dhaka Fiber Link Ltd.1