TCP SYN (JA4T)

65535_2-4-1-3-0-0_1346_7

first seen 2026-09-12 10:31 · last seen 2026-09-12 10:31 · JSON

Last 7 days (3 observations)

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 window65535
Option kinds2-4-1-3-0-0
MSS1346
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
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 152.0.7977.64, chrome 152.0.7977.65, +5 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr11ruru_548097b3acca_000000000000_0000000000002
ge20nr12ruru_4e6175a0ae99_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:46+18:0:1346:65535,7:mss,sok,nop,ws,eol+1:df,id+:03

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36 SRAF/3.6 HbbTV/1.2.1 (; SCBC; 43D1850; V8-MS586NA-LF1V015; v1.0; 2017); CE-HTML/1.0 FXM-U2FsdGVkX1/qg2bn8pnUSnAHKwHSNIigI+G0DE4rbyffRh3YyQfakxbhHXimAMvi-END3

Country

fingerprintco-occurrences
RU · Russia3

Network (ASN)

fingerprintco-occurrences
AS31205 · PJSC MegaFon3