TCP SYN (p0f)

6:45+19:0:1220:mtu*19,7:mss,sok,ts,nop,ws::0

first seen 2026-06-25 11:36 · last seen 2026-07-01 15:51 · JSON

Decomposed attributes

IP version6
Initial TTL45+19
Options length0
MSS1220
Window sizemtu*19
Window scale7
Options layoutmss,sok,ts,nop,ws
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_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.4
t13d121100_a538d02d76d5_f6eeaf393d2e1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr100000_3a59a3b24d6e_000000000000_0000000000003
ge20nr13enus_54728652be35_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, edge 149.0.4022.52, +10 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge11nn020000_70500bd9c457_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-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, +85 more.The fingerprint page shows the full measured match list. More on the catalog.1
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 156.0.8078.48, chrome 150.0.7871.128, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1
1:65536;2:0;4:6291456;6:262144|15663105|7:1:0:220|m,a,s,p1
1:65536;2:0;4:6291456;6:262144|15663105|9:1:0:220|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
24320_2-4-8-1-3_1220_74

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/127.0.6533.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.6668.100 Safari/537.361

Country

fingerprintco-occurrences
US · United States5

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC5