TCP SYN (p0f)

4:48+16:0:1380:mss*47,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-02 03:07 · last seen 2026-09-25 21:47 · JSON

Decomposed attributes

IP version4
Initial TTL48+16
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
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
t13d1713h1_ab0a1bf427ad_ecd0401ec68b Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1210h2_361d7b826c0b_5603904660151

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000002
ge20nn04enus_989c7cc05c9b_000000000000_0000000000001
ge11nn14enus_215b96fa06c9_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-4-8-1-3_1380_74

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.9 Safari/537.36 Edg/135.0.0.91

Country

fingerprintco-occurrences
JP · Japan3
US · United States1

Network (ASN)

fingerprintco-occurrences
AS62651 · Strong Technology, LLC.3
AS11721 · StylenTech LLC1