TCP SYN (p0f)

4:107+21:0:1386:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-19 15:51 · last seen 2026-08-23 23:07 · JSON

Decomposed attributes

IP version	`4`
Initial TTL	`107+21`
Options length	`0`
MSS	`1386`
Window size	`65535`
Window scale	`8`
Options layout	`mss,nop,ws,nop,nop,sok`
Quirks	`df,id+`
Payload class	`0`

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)

fingerprint	co-occurrences
`t13d1516h2_8daaf6152771_806a8c22fdea` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +28 more.The fingerprint page shows the full measured match list. More on the catalog.	33

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn14eses_1ea4ae3ab00a_000000000000_000000000000`	12
`ge20nr12eses_f632767e7b7a_000000000000_000000000000`	8
`ge20nr13eses_05d774e75578_000000000000_000000000000`	8
`ge20nn14eses_d9ad99aff99a_000000000000_000000000000`	5

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`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, +60 more.The fingerprint page shows the full measured match list. More on the catalog.	8
`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 152.0.7977.83, +85 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +26 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|5:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 156.0.8078.48, chrome 150.0.7871.128, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|7:1:0:220\|m,a,s,p`	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:0:256\|m,a,s,p`	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|9:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|11:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|13:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:1:256\|m,a,s,p`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-1-1-4_1386_8`	33

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36`	33

Country

fingerprint	co-occurrences
`FR` · France	33

Network (ASN)

fingerprint	co-occurrences
`AS16276` · OVH SAS	33

fingerprint	co-occurrences
`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, +60 more.The fingerprint page shows the full measured match list. More on the catalog.	8
`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 152.0.7977.83, +85 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +26 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|5:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 156.0.8078.48, chrome 150.0.7871.128, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|7:1:0:220\|m,a,s,p`	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:0:256\|m,a,s,p`	2
`1:65536;2:0;4:6291456;6:262144\|15663105\|9:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|11:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|13:1:0:220\|m,a,s,p`	1
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:1:256\|m,a,s,p`	1