TCP SYN (p0f)

4:242+13:0:1410:mss*42,8:mss,nop,ws,sok,eol+1:df,id+:0

first seen 2026-08-27 06:16 · last seen 2026-08-29 11:32 · JSON

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 version4
Initial TTL242+13
Options length0
MSS1410
Window sizemss*42
Window scale8
Options layoutmss,nop,ws,sok,eol+1
Quirksdf,id+
Payload class0

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)

fingerprintco-occurrences
t13d2913h1_723694b0fccc_5671b5df50293

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11frfr_835281d8e5d9_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
59220_2-1-3-4-0-0_1410_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.11
Mozilla/5.0 (iPad; CPU OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.11
Mozilla/5.0 (iPad; CPU OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/153.0 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
FR · France3

Network (ASN)

fingerprintco-occurrences
AS15557 · Societe Francaise Du Radiotelephone - SFR SA3