TCP SYN (JA4T)

64800_2-4-8-1-3_1200_7

first seen 2026-09-25 06:45 · last seen 2026-10-02 03:06 · JSON

Distinct clients per day (last 30 days, peak 1/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 window64800
Option kinds2-4-8-1-3
MSS1200
Window scale7

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
t13d2014h2_a09f3c656075_e42f34c56612 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, safari 26.6.1, +1 more.The fingerprint page shows the full measured match list. More on the catalog.38
t13d1516h2_8daaf6152771_e5627efa2ab137

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn12enus_60f823d07c94_000000000000_00000000000037
ge20nn08enus_1945e0741196_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.4, safari 26.6.2.The fingerprint page shows the full measured match list. More on the catalog.37
ge20nn09enus_40a44d3bf2a8_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|1:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|3:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|5:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|11:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|7:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|19:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|17:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|15:0:0:256|m,s,a,p1
2:0;3:100;4:2097152;8:1;9:1|10420225|21:0:0:256|m,s,a,p1

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1200:mss*54,7:mss,sok,ts,nop,ws:df,id+:038
4:54+10:0:1200:mss*54,7:mss,sok,ts,nop,ws:df,id+:037

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.138
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36 Edg/101.0.1210.4737

Country

fingerprintco-occurrences
NZ · New Zealand38
US · United States37

Network (ASN)

fingerprintco-occurrences
AS136557 · Host Universal Pty Ltd38
AS203020 · HostRoyale Technologies Pvt Ltd37