TCP SYN (p0f)

4:49+15:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 23:07 · last seen 2026-10-06 08:32 · 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 TTL49+15
Options length0
MSS1460
Window size62727
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
t13d1516h2_8daaf6152771_e5627efa2ab12
t13d5212h2_b262b3658495_8e6e362c5eac1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn10enus_9673d335a071_000000000000_0000000000002
ge20nn09en00_9507e94052e1_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p2
2:0|00|0|m,p,a,s1

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/93.0.4577.0 Safari/537.362
Iframely/1.3.1 (+https://iframely.com/docs/about) Atlassian1

Country

fingerprintco-occurrences
AU · Australia2
US · United States1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.2
AS14618 · Amazon.com, Inc.1