TCP SYN (p0f)

6:47+17:0:1440:32768,10:mss,nop,ws,sok,ts:flow:0

first seen 2026-07-01 18:26 · last seen 2026-07-17 00:55 · JSON

Decomposed attributes

IP version	`6`
Initial TTL	`47+17`
Options length	`0`
MSS	`1440`
Window size	`32768`
Window scale	`10`
Options layout	`mss,nop,ws,sok,ts`
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
`t13d1715h2_5b57614c22b0_a54fffd0eb61`	17

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr12enus_a72b71f519fc_000000000000_000000000000`	11
`ge20nr11enus_187a9385d229_000000000000_000000000000`	5
`ge20nn12enus_a72b71f519fc_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog.	3
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:42\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 155.0, firefox 154.0, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`1:65536;2:0;4:131072;5:16384\|12517377\|11:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|13:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|15:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|17:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|19:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|21:0:0:42\|m,p,a,s`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`32768_2-1-3-4-8_1440_10`	17

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0`	16
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0`	1

Country

fingerprint	co-occurrences
`NL` · Netherlands	17

Network (ASN)

fingerprint	co-occurrences
`AS215125` · Church of Cyberology	17

fingerprint	co-occurrences
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog.	3
`1:65536;2:0;4:131072;5:16384\|12517377\|3:0:0:42\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`1:65536;2:0;4:131072;5:16384\|12517377\|5:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`1:65536;2:0;4:131072;5:16384\|12517377\|7:0:0:22\|m,p,a,s` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 155.0, firefox 154.0, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`1:65536;2:0;4:131072;5:16384\|12517377\|11:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|13:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|15:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|17:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|19:0:0:42\|m,p,a,s`	1
`1:65536;2:0;4:131072;5:16384\|12517377\|21:0:0:42\|m,p,a,s`	1