TCP SYN (p0f)

4:56+8:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-12 05:14 · last seen 2026-08-14 16:15 · JSON

Decomposed attributes

IP version4
Initial TTL56+8
Options length0
MSS1460
Window sizemss*20
Window scale7
Options layoutmss,sok,ts,nop,ws
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
t13i1909h2_9dc949149365_97f8aa674fd96
t13i170900_5b57614c22b0_78e6aca7449b1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr030000_80b089f68b8e_000000000000_0000000000006
ge11nn070000_d0d63ed74832_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.6

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_77

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/72.06
libredtail-http1

Country

fingerprintco-occurrences
US · United States7

Network (ASN)

fingerprintco-occurrences
AS14061 · DigitalOcean, LLC6
AS400619 · AROSSCLOUD INC.1