TCP SYN (p0f)

4:53+11:0:8902:mss*7,12:mss,sok,ts,nop,ws:df,id+,ecn:0

first seen 2026-07-24 08:09 · last seen 2026-08-18 23:03 · JSON

Distinct clients per day (last 30 days, peak 15/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 TTL53+11
Options length0
MSS8902
Window sizemss*7
Window scale12
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+,ecn
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
t13d1510h2_8daaf6152771_5603904660157
t13d1512h2_8daaf6152771_cbb9361b6bf96
t13d1516h2_8daaf6152771_e5627efa2ab14
t13d2014h2_a09f3c656075_14788d8d241b2
t13d1011h2_05339b47149c_9ced094328c92
t13d1311h2_72cfd7f16cb0_9ced094328c92
t13d0710h2_1ae558fa1cf6_5603904660151
t13d1311h2_13ed24e39036_9ced094328c91
t13d1110h2_5e2a75874763_5603904660151
t13d2412h1_af6f4bcccfe4_d41ae481755e1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn04enus_989c7cc05c9b_000000000000_000000000000105
ge20nn12enus_60f823d07c94_000000000000_0000000000004
ge11nn06enus_21ea1759749c_000000000000_0000000000002
ge20nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +23 more.The fingerprint page shows the full measured match list. More on the catalog.2
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.2
ge20nn07enus_39faa4ed05e7_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p105
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p3
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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:65536;2:0;4:131072;5:16384|12517377|1:0:0:256|m,p,a,s2
2:0;4:4194304;3:100|10485760|1:0:0:255|m,s,p,a2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
62314_2-4-8-1-3_8902_12117

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.7 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.4 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.6 Safari/537.36 Edg/135.0.0.64
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.3 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.2 Safari/537.364
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.2 Safari/537.36 Edg/135.0.0.24
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.8 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.5 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.4 Safari/537.36 Edg/135.0.0.43
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.6 Safari/537.363

Country

fingerprintco-occurrences
SE · Sweden117

Network (ASN)

fingerprintco-occurrences
AS214503 · QuxLabs AB117