TCP SYN (p0f)

4:116+12:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-29 15:28 · last seen 2026-09-04 16:19 · 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

4:116+12:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac…

User-Agent claims iOS

TCP SYN initial TTL 116+12 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 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1
Observed TTL	116+12 (observed + path distance → initial)
Claimed OS	iOS
Confidence	low — single sighting of an environmental signal

low

2026-08-29

2026-08-31

4:116+12:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) …

User-Agent claims macOS

TCP SYN initial TTL 116+12 indicates Windows

Full User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Observed TTL	116+12 (observed + path distance → initial)
Claimed OS	macOS
Confidence	low — single sighting of an environmental signal

low

2026-09-04

4:116+12:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:0

Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac…

User-Agent claims iOS

TCP SYN initial TTL 116+12 indicates Windows

Full User-Agent	Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Mobile/15E148 Safari/604.1
Observed TTL	116+12 (observed + path distance → initial)
Claimed OS	iOS
Confidence	low — single sighting of an environmental signal

low

2026-08-29

Distinct clients per day (last 30 days, peak 2/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	`116+12`
Options length	`0`
MSS	`1460`
Window size	`8192`
Window scale	`2`
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
`t13d2913h1_723694b0fccc_5671b5df5029`	3
`t13d1515h1_8daaf6152771_0a20fe35d3a5`	1
`t13d1515h1_8daaf6152771_de4a06bb82e3`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn14enus_4a2973d235de_000000000000_000000000000`	1
`ge11nr11frfr_835281d8e5d9_000000000000_000000000000`	1
`ge11nr11kokr_835281d8e5d9_000000000000_000000000000`	1
`ge11nr11enus_835281d8e5d9_000000000000_000000000000`	1
`ge11nn13enus_9db22d02e17a_000000000000_000000000000`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`8192_2-1-3-1-1-4_1460_2`	5

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36`	1
`Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Mobile/15E148 Safari/604.1`	1

Country

fingerprint	co-occurrences
`UA` · Ukraine	2
`US` · United States	1
`KR` · South Korea	1
`FR` · France	1

Network (ASN)

fingerprint	co-occurrences
`AS201776` · Miranda-Media Ltd	2
`AS701` · Verizon Business	1
`AS3215` · Orange S.A.	1
`AS9318` · SK Broadband Co Ltd	1