TCP SYN (p0f)

4:46+18:0:1400:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-14 17:25 · last seen 2026-06-14 17:49 · JSON

Decomposed attributes

IP version4
Initial TTL46+18
Options length0
MSS1400
Window sizemss*20
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
t13d191000_9dc949149365_e7c28522265136
t13d491000_834380eab35e_5ac7197df9d21

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn020000_3ed38b250d3d_000000000000_00000000000036
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.1

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.3636
Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.11

Country

fingerprintco-occurrences
CN · China37

Network (ASN)

fingerprintco-occurrences
AS4837 · CHINA UNICOM China169 Backbone36
AS137266 · CHINATELECOM Hubei province Wuhan 5G network1