TCP SYN (p0f)

4:54+10:0:8960:mss*7,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 14:37 · last seen 2026-08-18 06:02 · 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 TTL54+10
Options length0
MSS8960
Window sizemss*7
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
t13d251100_b78ed14e2fd0_ab7e3b40a6771
t13d361100_018971650b2c_e8b3fe21f08b1
t13d1010h2_c9dbc4500a5c_5603904660151
t13d1410h2_0d8945076557_5603904660151
t13d0811h2_20f52ab92984_9ced094328c91
t13d0910h2_02d5621ecb02_5603904660151
t13d1011h2_738be80a9c6b_b11bb3600f941

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn04enus_989c7cc05c9b_000000000000_0000000000005
ge11nr050000_57c5e92682a8_000000000000_0000000000001
ge11nn06enus_98e697c2fa06_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,p5

TCP SYN (JA4T)

fingerprintco-occurrences
62720_2-4-8-1-3_8960_77

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.6 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.361
Mozilla/5.0 (X11; Linux i686; rv:1.9.5.20) Gecko/ Firefox/3.6.191
f1tym1-scraper/1.0 (+https://f1tym1.com/sources/)1
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.9 Safari/537.36 Edg/134.0.0.91
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.8 Safari/537.36 Edg/135.0.0.81

Country

fingerprintco-occurrences
SE · Sweden5
US · United States2

Network (ASN)

fingerprintco-occurrences
AS214503 · QuxLabs AB5
AS31898 · Oracle Corporation2