TCP SYN (p0f)

4:55+9:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-09 05:09 · last seen 2026-09-16 01:35 · JSON

Last 7 days (4 observations)

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 TTL55+9
Options length0
MSS1460
Window sizemss*22
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
t13d190900_9dc949149365_97f8aa674fd96

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_57c5e92682a8_000000000000_0000000000006

TCP SYN (JA4T)

fingerprintco-occurrences
32120_2-4-8-1-3_1460_76

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; FreeBSD amd64) AppleWebKit/537.4 (KHTML like Gecko) Chrome/22.0.1229.79 Safari/537.41
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.361
Dalvik/2.1.0 (Linux; U; Android 8.0.0; SM-A520F Build/R16NW)1
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Mobile Safari/537.361
Mozilla/5.0 (X11; FreeBSD amd64) AppleWebKit/535.22+ (KHTML, like Gecko) Chromium/17.0.963.56 Chrome/17.0.963.56 Safari/535.22+ Epiphany/2.30.61
Mozilla/5.0 (Linux; Android 9; SAMSUNG SM-G955F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/16.2 Chrome/92.0.4515.166 Mobile Safari/537.361

Country

fingerprintco-occurrences
RO · Romania6

Network (ASN)

fingerprintco-occurrences
AS47890 · UNMANAGED LTD6