TCP SYN (p0f)

4:52+12:0:1460:mss*15,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-12 22:54 · last seen 2026-09-09 06:28 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 1/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 TTL52+12
Options length0
MSS1460
Window sizemss*15
Window scale10
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
t13d190900_9dc949149365_97f8aa674fd94
t13i190800_9dc949149365_97f8aa674fd91

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_e1d2031bdfea_000000000000_0000000000004
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
21900_2-4-8-1-3_1460_104

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/)5

Country

fingerprintco-occurrences
US · United States5

Network (ASN)

fingerprintco-occurrences
AS398324 · Censys, Inc.5