User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:148.0) Gecko/20100101 Firefox/148.0

first seen 2026-06-17 12:40 · last seen 2026-07-02 22:09 · JSON

Decomposed attributes

Browser / client	`Firefox 148.0`
Operating system	`Windows 10.0`
Device class	`desktop`
Note	`inferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above`

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
`t13d1717h1_5b57614c22b0_3cbfd9057e0d`	8
`t13d311000_e8f1e7e78f70_518fb456ca59`	1
`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
`t13d1713h1_ab0a1bf427ad_ecd0401ec68b` Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn12enus_9a9494a1019e_000000000000_000000000000`	8
`ge11nr09enus_a1ca5f23d14f_000000000000_000000000000`	1
`ge20nn140000_02563f2d0fa8_000000000000_000000000000`	1
`ge11nn06enus_455c03b2c6d8_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-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.	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:53+11:0:1460:mss*29,11:mss,sok,ts,nop,ws:df,id+:0`	3
`4:50+14:0:1460:mss*20,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:55+9:0:1370:mss*47,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:44+20:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:0`	1
`4:44+20:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:42+22:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:38+26:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:46+18:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:0`	1
`4:53+11:0:1436:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`42340_2-4-8-1-3_1460_11`	3
`64240_2-4-8-1-3_1460_7`	3
`42340_2-4-8-1-3_1460_9`	2
`64390_2-4-8-1-3_1370_7`	1
`64240_2-4-8-1-3_1436_7`	1

Country

fingerprint	co-occurrences
`DE` · Germany	5
`US` · United States	3
`FR` · France	1
`FI` · Finland	1
`IT` · Italy	1

Network (ASN)

fingerprint	co-occurrences
`AS197540` · netcup GmbH	3
`AS24940` · Hetzner Online GmbH	2
`AS16276` · OVH SAS	2
`AS396982` · Google LLC	1
`AS51167` · Contabo GmbH	1
`AS58065` · Orion Network Limited	1
`AS393577` · Tritan Development	1