TCP SYN (JA4T)

64440_2-4-8-1-3_1412_7

first seen 2026-07-01 15:22 · last seen 2026-07-01 15:22 · JSON

Decomposed attributes

TCP window64440
Option kinds2-4-8-1-3
MSS1412
Window scale7

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, +9 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_afc743c11da4_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1412:64440,7:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; Aurora RSS Reader/1.0; +https://github.com/xiongsircool/aurora-rss-reader)1

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS4808 · China Unicom Beijing Province Network1