TCP SYN (JA4T)
64240_2-4-8-1-3_1436_14
first seen 2026-10-23 22:09 · last seen 2026-10-23 22:38 · JSON
Distinct clients per day (last 30 days, peak 12/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
| TCP window | 64240 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1436 |
| Window scale | 14 |
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)
| fingerprint | co-occurrences |
|---|---|
t13d3013h2_1d37bd780c83_8537cf56674e | 12 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn030000_bf75ddd0bb29_000000000000_000000000000 | 12 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 12 |
TCP SYN (p0f)
User-Agent
| fingerprint | co-occurrences |
|---|---|
curl/8.14.1 | 12 |
Country
| fingerprint | co-occurrences |
|---|---|
PT · Portugal | 4 |
ZA · South Africa | 3 |
IL · Israel | 2 |
CR · Costa Rica | 2 |
CO · Colombia | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS204094 · I4W - Web Solutions, Lda | 4 |
AS37153 · Xneelo (Pty) Ltd | 3 |
AS28110 · NAVEGALO S.A. | 2 |
AS206446 · CLOUD LEASE Ltd | 2 |
AS396356 · Latitude.sh | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 12 |