TCP SYN (p0f)

4:115+13:0:1460:63443,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-07-08 21:09 · last seen 2026-07-13 14:15 · JSON

Decomposed attributes

IP version4
Initial TTL115+13
Options length0
MSS1460
Window size63443
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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.4

HTTP request (JA4H)

fingerprintco-occurrences
he11nr06zhcn_1bd46fc8c29d_000000000000_0000000000002
ge11nr06zhcn_1bd46fc8c29d_000000000000_0000000000002

TCP SYN (JA4T)

fingerprintco-occurrences
63443_2-1-3-1-1-4_1460_84

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)3
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.361

Country

fingerprintco-occurrences
HK · Hong Kong SAR China4

Network (ASN)

fingerprintco-occurrences
AS133731 · Cloudie Limited4