TCP SYN (p0f)

4:45+19:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 09:36 · last seen 2026-08-04 21:57 · JSON

Decomposed attributes

IP version4
Initial TTL45+19
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.5
t13i130900_f57a46bbacb6_e7c2852226512
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.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn03zhcn_295e410d3834_000000000000_0000000000003
ge11nr05zhcn_f3bb7aa45ec4_000000000000_0000000000002
ge11nn020000_fdb5000be5f4_000000000000_0000000000001
ge11nn030000_0db47b7d240d_000000000000_0000000000001
ge11nr030000_cd680697de12_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1410_76

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/120.0.0.05
Go-http-client/1.11
fasthttp1
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.361

Country

fingerprintco-occurrences
CN · China5
RU · Russia2
ID · Indonesia1

Network (ASN)

fingerprintco-occurrences
AS141679 · China Telecom Beijing Tianjin Hebei Big Data Industry Park Branch5
AS34665 · Petersburg Internet Network ltd.2
AS138050 · Dinas Komunikasi Provins Jawa Barat1