TCP SYN (p0f)

4:114+14:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-09-01 14:06 · last seen 2026-09-01 14:06 · JSON

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 TTL114+14
Options length0
MSS1460
Window size62720
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
t13d1712h1_ab0a1bf427ad_882d495ac3813

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr15enus_21d8bfafe465_000000000000_0000000000001
ge11nr13enus_6b2e90fc445e_000000000000_0000000000001
ge11nr16enus_5a050224e10c_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
62720_2-1-3-1-1-4_1460_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_6_1; rv:118.0) Gecko/20100101 Firefox/118.01

Country

fingerprintco-occurrences
SG · Singapore3

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation3