TCP SYN (p0f)

4:50+14:0:1452:mss*22,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-02 01:36 · last seen 2026-09-05 06:14 · 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 TTL50+14
Options length0
MSS1452
Window sizemss*22
Window scale7
Options layoutmss,sok,ts,nop,ws
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
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.1
t13d131100_f57a46bbacb6_a089bac06eae1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_8391bea91fb6_000000000000_0000000000001
ge11nr030000_cd680697de12_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
32120_2-4-8-1-3_1452_72

User-Agent

fingerprintco-occurrences
Go-http-client/1.12

Country

fingerprintco-occurrences
UA · Ukraine2

Network (ASN)

fingerprintco-occurrences
AS49824 · PC Astra-net2