TCP SYN (JA4T)
65535_2-4-8-1-3_1370_8
first seen 2026-07-30 12:53 · last seen 2026-09-15 09:59 · 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
| TCP window | 65535 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1370 |
| Window scale | 8 |
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 |
|---|---|
t13d4412h1_fd39b124ee10_58ed7828516f | 1 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 1 |
t13d3113h2_e8f1e7e78f70_1b3407e2c936 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 1 |
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|---|
4:45+19:0:1370:65535,8:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:48+16:0:1370:65535,8:mss,sok,ts,nop,ws:df,id+:0 | 1 |
6:54+10:0:1370:65535,8:mss,sok,ts,nop,ws:flow:0 | 1 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
RU · Russia | 2 |
NG · Nigeria | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS12389 · PJSC Rostelecom | 1 |
AS37148 · Globacom Limited | 1 |
AS201147 · DAGSVYAZ TELECOM | 1 |