TCP SYN (p0f)

4:57+7:0:1260:mss*52,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-10-10 10:36 · last seen 2026-10-12 13:26 · JSON

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 TTL57+7
Options length0
MSS1260
Window sizemss*52
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
t13d1011h1_61a7ad8aa9b6_3fcd1a44f3e36

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_cf1edba2959c_000000000000_0000000000002
ge11nn05enus_20ffb2d95d94_000000000000_0000000000002
ge11nr040000_cf1edba2959c_000000000000_0000000000001
ge11nr05enus_20ffb2d95d94_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65520_2-4-8-1-3_1260_76

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; SEOJuice-SearchBot/1.0; +https://seojuice.io/bot6

Country

fingerprintco-occurrences
US · United States6

Network (ASN)

fingerprintco-occurrences
AS3257 · GTT Communications Inc.6