TCP SYN (JA4T)
65535_2-4-8-1-3_1250_6
first seen 2026-08-18 13:57 · last seen 2026-09-15 06:55 · JSON
Last 7 days (7 observations)
Distinct clients per day (last 30 days, peak 8/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 | 1250 |
| Window scale | 6 |
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 |
|---|---|
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 8 |
t13d1516h2_8daaf6152771_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog. | 7 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 7 |
t13d3112h1_e8f1e7e78f70_d41ae481755e | 1 |
t13d1517h2_8daaf6152771_b1ff8ab2d16f | 1 |
t13d2812h2_257f3020b3a2_cbb9361b6bf9 | 1 |
HTTP request (JA4H)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +43 more.The fingerprint page shows the full measured match list. More on the catalog. | 8 |
1:65536;2:0;4:6291456;6:262144|15663105|1:0:0:256|m,a,s,p | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
IN · India | 22 |
UA · Ukraine | 2 |
BD · Bangladesh | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS24560 · Bharti Airtel Ltd., Telemedia Services | 22 |
AS49824 · PC Astra-net | 2 |
AS134153 · Xplore Net BD | 1 |