TCP SYN (p0f)

4:47+17:0:1460:65535,13:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 15:01 · last seen 2026-10-31 03:31 · 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 TTL47+17
Options length0
MSS1460
Window size65535
Window scale13
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
t13d1312h2_a44d0ee8b3cc_e381dae6da6b9

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn090000_6c95df8859bf_000000000000_0000000000002
ge20nn080000_eab49c6106e6_000000000000_0000000000002
ge20nn090000_9f537e276b29_000000000000_0000000000002
ge20nn070000_1c05be67a921_000000000000_0000000000001
ge20nn080000_befb584a1db7_000000000000_0000000000001
ge20nn090000_2b87eda31960_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;3:1;4:8388608;5:65536|8323073|0|m,s,a,p9

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_139

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:127.0) Gecko/20100101 Firefox/127.01
Earthshine/1.0 (earthshine.fibonacci.ai; contact: hello@fibonacci.ai)1
BergamotToolRadarBot/0.1 (+https://bergamotadvisors.com)1
Mozilla/5.0 (compatible; folo-api-personal/1.0; +https://github.com/RSSNext/Folo)1
Wget/1.21.3 (linux-gnu)1
Mozilla/5.0 (compatible; SquareTownBot/1.0; +https://square.pov.town)1

Country

fingerprintco-occurrences
DE · Germany9

Network (ASN)

fingerprintco-occurrences
AS13335 · Cloudflare, Inc.9

TLS supported groups

fingerprintco-occurrences
001d,0017,0018,0019,11ec,6399,fe321