TCP SYN (JA4T)

20440_2-4-8-1-3_1460_14

first seen 2026-07-23 20:31 · last seen 2026-07-23 21:07 · JSON

Decomposed attributes

TCP window	`20440`
Option kinds	`2-4-8-1-3`
MSS	`1460`
Window scale	`14`

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)

fingerprint	co-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.	21

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr09enus_d05bf764aa1e_000000000000_000000000000`	15
`ge20nn10enus_f7ad313dcc59_000000000000_000000000000`	5
`ge20nn11enus_f60a2dc9f654_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`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.	10
`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.	6
`1:65536;2:0;4:6291456;6:262144\|15663105\|3:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +21 more.The fingerprint page shows the full measured match list. More on the catalog.	4
`1:65536;2:0;4:6291456;6:262144\|15663105\|5:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 150.0.7871.128, chromium 148.0.7778.96, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:56+8:0:1460:mss*14,14:mss,sok,ts,nop,ws:df,id+:0`	21

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/148.0.7778.100 Mobile/15E148 Safari/604.1`	5
`Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/148.0.7778.47 Mobile/15E148 Safari/604.1`	4
`Mozilla/5.0 (iPhone; CPU iPhone OS 18_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/148.0.7778.47 Mobile/15E148 Safari/604.1`	4
`Mozilla/5.0 (iPhone; CPU iPhone OS 18_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/148.0.7778.166 Mobile/15E148 Safari/604.1`	4
`Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/148.0.7778.100 Mobile/15E148 Safari/604.1`	4

Country

fingerprint	co-occurrences
`US` · United States	21

Network (ASN)

fingerprint	co-occurrences
`AS38136` · Akari Networks	21