TCP SYN (p0f)

4:38+26:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-05 10:12 · last seen 2026-09-21 14:34 · JSON

Decomposed attributes

IP version4
Initial TTL38+26
Options length0
MSS1410
Window sizemss*46
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
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn03zhcn_295e410d3834_000000000000_0000000000003

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1410_73

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.03

Country

fingerprintco-occurrences
CN · China3

Network (ASN)

fingerprintco-occurrences
AS141679 · China Telecom Beijing Tianjin Hebei Big Data Industry Park Branch3