TCP SYN (p0f)

6:235+20:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:ecn,flow:0

first seen 2026-06-26 07:39 · last seen 2026-09-22 17:09 · JSON

Decomposed attributes

IP version	`6`
Initial TTL	`235+20`
Options length	`0`
MSS	`1440`
Window size	`65535`
Window scale	`6`
Options layout	`mss,nop,ws,nop,nop,ts,sok,eol+1`
Quirks	`ecn,flow`
Payload class	`0`

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_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, +28 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`t13d1713h1_ab0a1bf427ad_89ab6efea773`	2
`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.	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr12dede_54b4638ab28b_000000000000_000000000000`	2
`ge11nn06en00_98e697c2fa06_000000000000_000000000000`	2
`ge20nr13dede_54728652be35_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 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog.	3

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-1-3-1-1-8-4-0-0_1440_6`	4

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128 Safari/537.36 glintcheck-study`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36`	1

Country

fingerprint	co-occurrences
`DE` · Germany	5

Network (ASN)

fingerprint	co-occurrences
`AS6805` · Telefonica Germany GmbH & Co.OHG	3
`AS50436` · Tele Columbus AG	2

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprint	linked observations
`q13d0311h3_55b375c5d22e_653d80c3fe9d`	3