TCP SYN (JA4T)

64240_2-1-1-4-1-3_1300_9

first seen 2026-08-13 09:11 · last seen 2026-08-31 09:49 · JSON

Decomposed attributes

TCP window64240
Option kinds2-1-1-4-1-3
MSS1300
Window scale9

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_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.20
t13d2614h2_2802a3db6c62_a5b99884f7f516
t13d2913h1_723694b0fccc_5671b5df50295
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr010000_c125d0397b60_000000000000_00000000000016
ge20nr16engb_94fdc06e0694_000000000000_0000000000006
ge20nr16frca_94fdc06e0694_000000000000_0000000000004
ge20nr16nlnl_94fdc06e0694_000000000000_0000000000002
ge20nr13enca_9e2b86631664_000000000000_0000000000002
ge20nn16frca_94fdc06e0694_000000000000_0000000000002
ge11nr11enca_835281d8e5d9_000000000000_0000000000002
ge11nr11engb_b350a6a7c155_000000000000_0000000000002
ge20nr16dede_94fdc06e0694_000000000000_0000000000001
ge20nn16enca_94fdc06e0694_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, +60 more.The fingerprint page shows the full measured match list. More on the catalog.20
4:2097152;3:100|10485760|0|m,s,p,a16
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.3

TCP SYN (p0f)

fingerprintco-occurrences
4:110+18:0:1300:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:016
4:112+16:0:1300:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:08
4:113+15:0:1300:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:08
4:114+14:0:1300:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:06
4:115+13:0:1300:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:06

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 12; SM-S901B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.364
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.363
Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.03
Mozilla/5.0 (Linux; Android 13; Redmi Note 12) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1 Mobile/15E148 Safari/604.12
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 OPR/135.0.0.02
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-S921B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 15; SM-F946B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 13; SM-A546B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
HK · Hong Kong SAR China16
CA · Canada12
GB · United Kingdom10
DE · Germany3
NL · Netherlands3

Network (ASN)

fingerprintco-occurrences
AS39600 · BUNNY TECHNOLOGY LLC16
AS10753 · Level 3 Parent, LLC12
AS207020 · Pro Marketing Central LLC10
AS6830 · Liberty Global Europe Holding B.V.6