TCP SYN (p0f)

4:48+16:0:1412:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:0

first seen 2026-09-16 00:50 · last seen 2026-09-16 03:18 · JSON

Last 7 days (2 observations)

Decomposed attributes

IP version	`4`
Initial TTL	`48+16`
Options length	`0`
MSS	`1412`
Window size	`65535`
Window scale	`6`
Options layout	`mss,nop,ws,nop,nop,ts,sok,eol+1`
Quirks	`df,ecn`
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
`t13d2013h2_a09f3c656075_7f0f34a4126d` Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.4, safari 26.6.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	2

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn08zhcn_1945e0741196_000000000000_000000000000`	2

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;3:100;4:2097152;9:1\|10420225\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	2

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-1-1-8-4-0-0_1412_6`	2

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6.1 Mobile/15E148 Safari/604.1`	2

Country

fingerprint	co-occurrences
`CN` · China	2

Network (ASN)

fingerprint	co-occurrences
`AS4134` · CHINANET BACKBONE	2