TCP SYN (JA4T)

64240_2-1-3-1-1-4_1380_8

first seen 2026-07-21 17:53 · last seen 2026-09-12 10:30 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 2/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 kinds2-1-3-1-1-4
MSS1380
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
t13i3111h2_e8f1e7e78f70_b26ce05bbdd62
t13d2913h1_723694b0fccc_5671b5df50292
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.2
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.2
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.1
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.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog.3
ge20nr16kokr_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, +23 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge11nr11enus_835281d8e5d9_000000000000_0000000000001
ge11nn11soso_835281d8e5d9_000000000000_0000000000001
ge20nn13ruru_9519c2577190_000000000000_0000000000001
ge20nr12ruru_54b4638ab28b_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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.4
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog.3
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
6:112+16:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:flow:02
4:112+16:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok::01
4:111+17:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:112+16:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:54+10:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:107+21:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:108+20:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:109+19:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:110+18:0:1380:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01

User-Agent

fingerprintco-occurrences
curl/8.5.03
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Linux; Android 13; SM-A546B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 13; SM-S911B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (iPad; CPU OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
ID · Indonesia3
KR · South Korea2
RU · Russia2
PL · Poland1
MA · Morocco1
SI · Slovenia1

Network (ASN)

fingerprintco-occurrences
AS139994 · PT XL Axiata Tbk3
AS34959 · PROCLOUD MSK2
AS36884 · Wana Corporate1
AS17858 · LG POWERCOMM1
AS3212 · Telemach Slovenija d.o.o.1
AS60806 · "ZICOM NEXT" SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA1
AS9316 · DACOM-PUBNETPLUS1