TCP SYN (p0f)

4:42+22:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-23 03:28 · last seen 2026-09-26 08:18 · JSON

Decomposed attributes

IP version4
Initial TTL42+22
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
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.12
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
t13d301300_1d37bd780c83_5ae85263eb3b1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn08*000_2025024c020c_000000000000_00000000000011
ge11nr030000_0db47b7d240d_000000000000_0000000000001
ge11nn08en00_21593d68c304_000000000000_0000000000001
ge11nr07*000_131b6413da1e_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1410_713

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.3612
Go-http-client/1.11
Mastodon/4.6.2 (http.rb/5.3.1; +https://mastodon.social/) Bot1

Country

fingerprintco-occurrences
DE · Germany13
ID · Indonesia1

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH13
AS138050 · Dinas Komunikasi Provins Jawa Barat1