TCP SYN (JA4T)

65320_2-1-3-1-1-4_1420_8

first seen 2026-06-30 12:27 · last seen 2026-09-14 09:41 · JSON

Last 7 days (5 observations)

Distinct clients per day (last 30 days, peak 3/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 window65320
Option kinds2-1-3-1-1-4
MSS1420
Window scale8

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
t13d1411h2_cbb2034c60b8_e7c28522265134
t12d860600_e18388e7f3a3_a1e93568279513

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr020000_fb4f949fd323_000000000000_00000000000034
ge11nn06enus_ff6fe191b79d_000000000000_00000000000013

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.34

TCP SYN (p0f)

fingerprintco-occurrences
4:122+6:0:1420:mss*46,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:046
4:119+9:0:1420:mss*46,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; CMS-Checker/1.0; +https://example.com)26
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.3610
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.368
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.361

Country

fingerprintco-occurrences
US · United States39
NL · Netherlands4
BE · Belgium4

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC47