TCP SYN (JA4T)

26883_2-4-8-1-3_1460_7

first seen 2026-06-29 23:16 · last seen 2026-09-23 02:40 · JSON

Decomposed attributes

TCP window26883
Option kinds2-4-8-1-3
MSS1460
Window scale7

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
t12d8008h1_9cedc1f1428b_046e095b7c4a14
t12d080800_723ebca51f63_5a95de72b7698
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.3
t13d521100_b262b3658495_8e6e362c5eac1
t12d120700_d34a8e72043a_036209cd1ead1
t13d570900_eb0d7745fcfe_61a98bfc9c3f1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_1d610a342144_000000000000_0000000000008
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.7
he11nn030000_fe444ad14866_000000000000_0000000000007
ge20nn10enus_f7ad313dcc59_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
ge11nn14frfr_b791c84bd17a_000000000000_0000000000001
ge11nn030000_b0d6a43aa599_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 5.1.26100.33296, powershell 5.1.26100.33158, powershell 5.1.26100.33438, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge11nn05*000_41d3a8fc004e_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.3

TCP SYN (p0f)

fingerprintco-occurrences
4:245+10:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:08
4:249+6:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:08
4:246+9:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:06
4:247+8:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:02
4:244+11:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:02
4:52+12:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:01
4:243+12:0:1460:26883,7:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; Feedspot/1.0 (+https://www.feedspot.com/fs/fetcher; like FeedFetcher-Google)14
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.1.25 (KHTML, like Gecko) Version/8.0 Safari/600.1.258
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.363
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/149.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:134.0) Gecko/20100101 Firefox/134.01
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
US · United States26
FR · France1
ES · Spain1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.16
AS14618 · Amazon.com, Inc.12