TCP SYN (p0f)

6:237+18:0:1300:65535,8:mss,nop,ws,nop,nop,sok:flow:0

first seen 2026-09-13 10:13 · last seen 2026-09-13 10:13 · JSON

Decomposed attributes

IP version6
Initial TTL237+18
Options length0
MSS1300
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.21.0, node-fetch 24.19.0, node-fetch 22.23.1, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn05*000_754588453448_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:262144|458753|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 26.4.0.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1300_81

User-Agent

fingerprintco-occurrences
deepseek-harness/0.0.1 (+https://github.com/deepseek-ai)1

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS56040 · China Mobile communications corporation1