TCP SYN (p0f)

4:111+17:0:1400:65535,8:mss,nop,ws,nop,nop,sok:id-:0

first seen 2026-08-29 17:50 · last seen 2026-08-29 19:09 · JSON

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 version4
Initial TTL111+17
Options length0
MSS1400
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksid-
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_5671b5df50294

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11frfr_835281d8e5d9_000000000000_0000000000002
ge11nr11frfr_b350a6a7c155_000000000000_0000000000002

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1400_84

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 17_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Mobile/15E148 Safari/604.12
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/604.12

Country

fingerprintco-occurrences
FR · France4

Network (ASN)

fingerprintco-occurrences
AS5410 · Bouygues Telecom SA4