TCP SYN (JA4T)

64240_2-1-3-4-8_1452_8

first seen 2026-08-29 04:35 · last seen 2026-10-25 12:07 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 3/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 window64240
Option kinds2-1-3-4-8
MSS1452
Window scale8

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
t13d2913h1_723694b0fccc_5671b5df502919
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.10
t13d1515h1_8daaf6152771_de4a06bb82e33
t13d1515h1_8daaf6152771_0a20fe35d3a52
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, +28 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11ruru_835281d8e5d9_000000000000_00000000000010
ge20nr16ruru_94fdc06e0694_000000000000_0000000000007
ge11nr11ruru_b350a6a7c155_000000000000_0000000000005
ge11nn13enus_9db22d02e17a_000000000000_0000000000004
ge11nn11ruru_835281d8e5d9_000000000000_0000000000003
ge20nn16ruru_94fdc06e0694_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, +36 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge11nn14enus_4a2973d235de_000000000000_0000000000001
ge20nr16thth_94fdc06e0694_000000000000_0000000000001
ge11nn11ruru_b350a6a7c155_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, +57 more.The fingerprint page shows the full measured match list. More on the catalog.11

TCP SYN (p0f)

fingerprintco-occurrences
4:117+11:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:019
4:118+10:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:09
4:45+19:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:03
4:52+12:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:02
4:41+23:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:01
4:111+17:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 17_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Mobile/15E148 Safari/604.19
Mozilla/5.0 (iPad; CPU OS 16_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Mobile/15E148 Safari/604.15
Mozilla/5.0 (Linux; Android 13; Pixel 6 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362
Mozilla/5.0 (Linux; Android 14; Pixel 9) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (iPad; CPU OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 14; SM-S926B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (iPad; CPU OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/153.0 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
RU · Russia34
TH · Thailand1

Network (ASN)

fingerprintco-occurrences
AS12389 · PJSC Rostelecom27
AS50477 · Svyaz-Energo Ltd.3
AS47165 · Omskie kabelnye seti Ltd.2
AS17552 · True Online1
AS59793 · Corporate Internet Service Provider LLC1
AS60172 · YARNET LLC1

TLS supported groups

fingerprintco-occurrences
0a0a,001d,0017,00184
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1