TCP SYN (p0f)

4:34+30:0:1460:mss*20,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-18 02:48 · last seen 2026-09-10 11:52 · 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 TTL34+30
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
t12d490600_730fb1b0ac6a_a1e9356827956

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07zhcn_ad6bb88d6320_000000000000_0000000000006

TCP SYN (JA4T)

fingerprintco-occurrences
29200_2-4-8-1-3_1460_76

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.27 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/601.1.274
Dalvik/2.1.0 (Linux; U; Android 9.0; ZTE BA520 Build/MRA58K)2

Country

fingerprintco-occurrences
CN · China6

Network (ASN)

fingerprintco-occurrences
AS58461 · CT HangZhou IDC6