TCP SYN (p0f)

4:115+13:0:1460:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-08-14 21:09 · last seen 2026-08-30 08:04 · JSON

Inconsistencies

User-Agents observed with this fingerprint that contradict what it proves at the wire. all inconsistencies →

fingerprint User-Agent claims wire shows confidence seen first seen last seen

4:115+13:0:1460:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) App…

User-Agent claims Android

TCP SYN initial TTL 115+13 indicates Windows

The initial TTL is set by the sending kernel (64 on Unix-like systems, 128 on Windows) and survives NAT. But VPNs, proxies and tunnels legitimately replace the sending stack, so this check never exceeds medium confidence.

Full User-Agent	Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36
Observed TTL	115+13 (observed + path distance → initial)
Claimed OS	Android
Confidence	low — single sighting of an environmental signal

low

2026-08-30

Distinct clients per day (last 30 days, peak 1/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

IP version	`4`
Initial TTL	`115+13`
Options length	`0`
MSS	`1460`
Window size	`8192`
Window scale	`8`
Options layout	`mss,nop,ws,nop,nop,sok`
Quirks	`df,id+,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
`t13d1516h2_8daaf6152771_d8a2da3f94cd` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`t12d280700_bbd4f008d9b2_f28add8e7af0`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn020000_d5c75abc5c2c_000000000000_000000000000`	1
`ge20nn16enus_94fdc06e0694_000000000000_000000000000`	1
`ge20nr16enus_94fdc06e0694_000000000000_000000000000`	1

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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.	2

TCP SYN (JA4T)

fingerprint	co-occurrences
`8192_2-1-3-1-1-4_1460_8`	3

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36`	2

Country

fingerprint	co-occurrences
`US` · United States	2
`RU` · Russia	1

Network (ASN)

fingerprint	co-occurrences
`AS7922` · Comcast Cable Communications, LLC	2
`AS212913` · TIME-HOST LTD	1