TCP SYN (p0f)

4:49+15:0:1460:29184,7:mss,nop,nop,ts,nop,ws::0

first seen 2026-09-22 02:20 · last seen 2026-11-01 02:01 · JSON

Last 7 days (2 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 TTL49+15
Options length0
MSS1460
Window size29184
Window scale7
Options layoutmss,nop,nop,ts,nop,ws
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
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.21.0, node-fetch 24.19.0, node-fetch 22.23.1, +9 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
he11nn11enus_051b58926bad_000000000000_0000000000002
ge11nn11enus_051b58926bad_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
29184_2-1-1-8-1-3_1460_73

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.363

Country

fingerprintco-occurrences
US · United States3

Network (ASN)

fingerprintco-occurrences
AS14061 · DigitalOcean, LLC3

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1, python-requests 2.34.2, curl 8.23.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog.2