TCP SYN (p0f)

4:50+14:0:1460:35844,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-27 23:06 · last seen 2026-10-31 15:50 · JSON

Last 7 days (8 observations)

Distinct clients per day (last 30 days, peak 5/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL50+14
Options length0
MSS1460
Window size35844
Window scale10
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_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.34
t13d1313h2_f57a46bbacb6_9249cab70c7714
t12d610700_8a10cb45a794_4446390ac2241

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn10enus_06e2da52e592_000000000000_00000000000025
ge20nn020000_fb4f949fd323_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.9, powershell 7.6.8.The fingerprint page shows the full measured match list. More on the catalog.11
ge20nn10enus_e1b5b4fef504_000000000000_0000000000005
ge20nr020000_fb4f949fd323_000000000000_0000000000003
ge20nn10enus_dfc386b48ce4_000000000000_0000000000003
ge11nn040000_4f6f4aad0c1e_000000000000_0000000000001
ge20nn10enus_f058b30e64ca_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +60 more.The fingerprint page shows the full measured match list. More on the catalog.34
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p14

TCP SYN (JA4T)

fingerprintco-occurrences
35844_2-4-8-1-3_1460_1049

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)35
Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Version/7.0 Mobile Safari/537.36 (compatible; Bytespider; https://bytedance.sg.larkoffice.com/docx/K5bxdypulop3IIxrJb0lOjLVgFe)14

Country

fingerprintco-occurrences
SG · Singapore49

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.49

TLS supported groups

fingerprintco-occurrences
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.19
6399,001d,0017,0018,00197