TCP SYN (p0f)

6:54+10:0:1326:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:0

first seen 2026-09-28 13:39 · last seen 2026-09-28 13:39 · JSON

Decomposed attributes

IP version	`6`
Initial TTL	`54+10`
Options length	`0`
MSS	`1326`
Window size	`65535`
Window scale	`6`
Options layout	`mss,nop,ws,nop,nop,ts,sok,eol+1`
Quirks	`flow`
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
`t13d3112h2_e8f1e7e78f70_b26ce05bbdd6` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn020000_5594a17e7e7e_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`3:100;4:33554432;2:0\|33488897\|0\|m,p,s,a` Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-1-1-8-4-0-0_1326_6`	1

User-Agent

fingerprint	co-occurrences
`curl/7.88.1`	1

Country

fingerprint	co-occurrences
`RU` · Russia	1

Network (ASN)

fingerprint	co-occurrences
`AS12389` · PJSC Rostelecom	1