TCP SYN (p0f)

6:44+20:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:0

first seen 2026-07-10 05:12 · last seen 2026-09-10 10:01 · JSON

Last 7 days (8 observations)

Distinct clients per day (last 30 days, peak 10/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 version6
Initial TTL44+20
Options length0
MSS1440
Window sizemss*45
Window scale10
Options layoutmss,sok,ts,nop,ws
Quirksflow
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
t13d3112h1_1d947a95fc68_b72e173852fa150
t13d3112h1_1d947a95fc68_fa269c3d986d55

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07cscz_62ad33df7c0a_000000000000_000000000000107
ge11nn07cscz_d4021d63333c_000000000000_00000000000032
ge11nn06cscz_fcadf6bdaa82_000000000000_00000000000029
ge11nn06cscz_f604b96915d0_000000000000_00000000000025
ge11nn06cscz_a9e98b5c162a_000000000000_00000000000012

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_10205

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; SeznamBot/4.0; +https://o-seznam.cz/napoveda/vyhledavani/en/seznambot-crawler/)205

Country

fingerprintco-occurrences
CZ · Czechia205

Network (ASN)

fingerprintco-occurrences
AS43037 · Seznam.cz, a.s.205