TCP SYN (JA4T)

1152_2-4-8-1-3_1460_00

first seen 2026-08-20 06:53 · last seen 2026-08-21 07:41 · 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

TCP window1152
Option kinds2-4-8-1-3
MSS1460
Window scale00

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_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.34
t13d1516h2_8daaf6152771_33a51b5ad3c515
t13d1517h2_8daaf6152771_0bf6ec06e1997
t13d1516h2_8daaf6152771_e5627efa2ab14
t13d1910h2_765f8cc403f2_8846e450cd951
t13d1517h2_8daaf6152771_520bb30278ac1

HTTP request (JA4H)

fingerprintco-occurrences
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.12
ge20nn13eses_0c2c1d640f3e_000000000000_00000000000010
ge20nn13frfr_0c2c1d640f3e_000000000000_0000000000007
ge20nn13engb_0c2c1d640f3e_000000000000_0000000000005
ge20nn13zhcn_0c2c1d640f3e_000000000000_0000000000004
ge20nn13ptbr_0c2c1d640f3e_000000000000_0000000000003
ge20nn11ruru_3901d4197baf_000000000000_0000000000002
ge20nn11dede_3901d4197baf_000000000000_0000000000002
ge20nn11ptbr_3901d4197baf_000000000000_0000000000002
ge20nn11zhcn_3901d4197baf_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|0|m,p,a,s15
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p7
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p4
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|11:1:0:256|m,a,s,p4
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|15:1:0:256|m,a,s,p4
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|5:1:0:256|m,a,s,p4
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|7:1:0:256|m,a,s,p4
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|9:1:0:256|m,a,s,p2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|13:1:0:256|m,a,s,p2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|49:1:0:256|m,a,s,p1

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:1152,0:mss,sok,ts,nop,ws:df,id+:062

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.3621
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.3612
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.09
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.07
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36 Edg/125.0.0.06
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Brave/1.73.04
Mozilla/5.0 (Macintosh; Intel Mac OS X 14_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.151
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/109.0.0.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Brave/1.67.01

Country

fingerprintco-occurrences
NL · Netherlands62

Network (ASN)

fingerprintco-occurrences
AS197170 · TechTies Inc.62