TCP SYN (p0f)

4:106+22:0:1412:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-27 21:46 · last seen 2026-08-31 03:37 · JSON

Distinct clients per day (last 30 days, peak 3/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 TTL106+22
Options length0
MSS1412
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.5
t13d2913h1_723694b0fccc_5671b5df50294

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr16zhsg_94fdc06e0694_000000000000_0000000000003
ge11nr11ensg_835281d8e5d9_000000000000_0000000000001
ge11nr11svse_835281d8e5d9_000000000000_0000000000001
ge11nn11svse_835281d8e5d9_000000000000_0000000000001
ge20nr16fifi_94fdc06e0694_000000000000_0000000000001
ge20nr16ruru_94fdc06e0694_000000000000_0000000000001
ge11nr11fifi_835281d8e5d9_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.5

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1412_89

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 14; Pixel 9) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36 OPR/135.0.0.02
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.12
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_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Linux; Android 12; Pixel 6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 12; SM-G991B) 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) CriOS/150.0.0.0 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
SG · Singapore4
PE · Peru3
RU · Russia1
DO · Dominican Republic1

Network (ASN)

fingerprintco-occurrences
AS9506 · Singtel Fibre Broadband4
AS265691 · WI-NET TELECOM S.A.C.3
AS39709 · EXTREME LTD1
AS271935 · AIRTIME TECHNOLOGY SRL1