TCP SYN (JA4T)

8192_2-1-3-1-1-4_1440_8

first seen 2026-06-30 16:04 · last seen 2026-09-10 03:25 · JSON

Last 7 days (4 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 window8192
Option kinds2-1-3-1-1-4
MSS1440
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
t13d251100_b78ed14e2fd0_ab7e3b40a6774
t12d4907h1_730fb1b0ac6a_8587f467d9ea2
t13d1812h1_85036bcba153_d41ae481755e2
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
t12d280800_bbd4f008d9b2_16bbda4055b21
t13d2913h1_723694b0fccc_5671b5df50291

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr05en00_f3bb7aa45ec4_000000000000_0000000000004
ge11nn050000_0b4164a3b800_000000000000_0000000000002
po11nn070000_ba9cdd0f42e2_000000000000_0000000000002
ge20nr16thth_94fdc06e0694_000000000000_0000000000002
ge11nn040000_ae2590be4883_000000000000_0000000000001
ge11nr11soso_835281d8e5d9_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.2

TCP SYN (p0f)

fingerprintco-occurrences
6:113+15:0:1440:8192,8:mss,nop,ws,nop,nop,sok:ecn:02
6:112+16:0:1440:8192,8:mss,nop,ws,nop,nop,sok:ecn:02
4:107+21:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:110+18:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
6:40+24:0:1440:8192,8:mss,nop,ws,nop,nop,sok::01
4:109+19:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:110+18:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:111+17:0:1440:8192,8:mss,nop,ws,nop,nop,sok:df,id+:01

User-Agent

fingerprintco-occurrences
python-httpx/0.28.12
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.362
Mozilla/5.0 (Linux; Android 12; Pixel 6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Ubuntu; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.151
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_16) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Safari/605.1.151

Country

fingerprintco-occurrences
US · United States6
SG · Singapore2
CO · Colombia2
IN · India1
BD · Bangladesh1

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation4
AS14061 · DigitalOcean, LLC4
AS3816 · COLOMBIA TELECOMUNICACIONES S.A. ESP BIC2
AS55836 · Reliance Jio Infocomm Limited1
AS23956 · AmberIT Limited1