TCP SYN (p0f)

6:51+13:0:1440:62587,7:mss,sok,ts,nop,ws:flow:0

first seen 2026-07-07 14:47 · last seen 2026-10-18 19:20 · 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 version6
Initial TTL51+13
Options length0
MSS1440
Window size62587
Window scale7
Options layoutmss,sok,ts,nop,ws
Quirksflow
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
t13d1812h1_85036bcba153_d41ae481755e11

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn060000_9606e9a08f5b_000000000000_0000000000007
ge11nn080000_71a0fe9f4364_000000000000_0000000000004

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;4:65535;5:16384;3:100;6:65536|16777216|0|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.7

TCP SYN (JA4T)

fingerprintco-occurrences
62587_2-4-8-1-3_1440_711

User-Agent

fingerprintco-occurrences
Pandalytics/2.0 (+https://domainsbot.com/network-crawler-pandalytics-kdc68dhsbd/)11

Country

fingerprintco-occurrences
IE · Ireland11

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.11

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.1