TCP SYN (p0f)

4:47+17:0:1460:mss*15,9:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-13 03:58 · last seen 2026-09-07 01:01 · JSON

Distinct clients per day (last 30 days, peak 1/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 TTL47+17
Options length0
MSS1460
Window sizemss*15
Window scale9
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_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +24 more.The fingerprint page shows the full measured match list. More on the catalog.4
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.3
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 152.0.7977.64, chrome 152.0.7977.65, +5 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn13enus_daf415dbcf20_000000000000_0000000000001
ge20nr13enus_99d37a3209eb_000000000000_0000000000001
ge20nr13enus_07be69a2e595_000000000000_0000000000001
ge20nn13enus_482612a8c9e9_000000000000_0000000000001
ge20nr13enus_0f6356503bff_000000000000_0000000000001
ge20nr13enus_f9d35445bedb_000000000000_0000000000001
ge20nr13enus_d3c74ebb2ccd_000000000000_0000000000001
ge20nr13enus_2618692d1ef1_000000000000_0000000000001
ge20nr13enus_33ee23cf2fc2_000000000000_0000000000001
ge20nr13enus_5107274c9bc2_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|0|m,a,s,p10

TCP SYN (JA4T)

fingerprintco-occurrences
21900_2-4-8-1-3_1460_910

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.363

Country

fingerprintco-occurrences
US · United States10

Network (ASN)

fingerprintco-occurrences
AS16276 · OVH SAS10