TCP SYN (p0f)

4:108+20:0:1452:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-15 12:13 · last seen 2026-09-05 05:45 · JSON

Distinct clients per day (last 30 days, peak 2/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL108+20
Options length0
MSS1452
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+
Payload class0

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.8
t13d2913h1_723694b0fccc_5671b5df50293
t12d190800_d83cc789557e_7af1ed941c261
t13d1515h1_8daaf6152771_de4a06bb82e31
t13d1515h1_8daaf6152771_0a20fe35d3a51

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr16heil_94fdc06e0694_000000000000_0000000000004
ge11nr11heil_835281d8e5d9_000000000000_0000000000003
ge20nn16heil_94fdc06e0694_000000000000_0000000000002
po11nn07ptbr_7d361e250c48_000000000000_0000000000001
ge20nr16dede_94fdc06e0694_000000000000_0000000000001
ge20nr16itit_94fdc06e0694_000000000000_0000000000001
ge11nn13enus_9db22d02e17a_000000000000_0000000000001
ge11nn14enus_4a2973d235de_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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.8

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1452_814

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 14; Pixel 8 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 10; arm64) AppleWebKit/537.36 (KHTML, like Gecko) Safari/12.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 14; SM-S928B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/153.0 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Linux; Android 13; Pixel 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 OPR/135.0.0.01

Country

fingerprintco-occurrences
IL · Israel9
BR · Brazil2
DE · Germany1
IT · Italy1
LK · Sri Lanka1

Network (ASN)

fingerprintco-occurrences
AS6810 · "Bezeq"- THE ISRAEL TELECOMMUNICATION CORP. LTD.9
AS265475 · MUVNET TELECOM1
AS9329 · Sri Lanka Telecom Internet1
AS267510 · PROVEDOR CRNET TELECOM S.C. MULTIMIDIA EIRELI1
AS13101 · TNG Stadtnetz GmbH1
AS31543 · myNet GmbH1