TCP SYN (p0f)

4:47+17:0:1380:mss*47,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-23 03:14 · last seen 2026-07-01 22:23 · JSON

Decomposed attributes

IP version4
Initial TTL47+17
Options length0
MSS1380
Window sizemss*47
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
t13d1516h2_8daaf6152771_e5627efa2ab16
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.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr08enus_16d31f2f9221_000000000000_0000000000004
ge20nn10enus_9673d335a071_000000000000_0000000000002
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p4
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p2

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1380_72

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.4333.269 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.4016.139 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
US · United States8

Network (ASN)

fingerprintco-occurrences
AS53667 · FranTech Solutions6
AS174 · Cogent Communications, LLC2