TCP SYN (p0f)

4:106+22:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-07-02 03:04 · last seen 2026-10-27 01:03 · 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 TTL106+22
Options length0
MSS1440
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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
t12d860600_e18388e7f3a3_a1e9356827951

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn06enus_ff6fe191b79d_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1440_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.361

Country

fingerprintco-occurrences
IN · India1

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation1

TLS supported groups

fingerprintco-occurrences
0017,0019,001c,001b,0018,001a,0016,000e,000d,000b,000c,0009,000a1