TCP SYN (JA4T)
64240_2-4-8-1-3_1452_1
first seen 2026-08-25 05:01 · last seen 2026-09-15 21:19 · JSON
Last 7 days (33 observations)
Distinct clients per day (last 30 days, peak 31/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 | 1452 |
| Window scale | 1 |
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 | 45 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 39 |
t13d1516h1_8daaf6152771_1a63afa7c478 | 11 |
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
t13d2812h2_257f3020b3a2_cbb9361b6bf9 | 3 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 61 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 34 |
ge20nr130000_8b0ff7948a7d_000000000000_000000000000 | 3 |
ge20nn020000_b89ce445e0b3_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.27.0, go-net/http 1.26.6, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +59 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|1:0:0:256|m,a,s,p | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +21 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
1:65536;2:0;4:6291456;6:262144|15663105|3:0:0:256|m,a,s,p | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 44 |
ID · Indonesia | 6 |
IN · India | 6 |
VN · Vietnam | 6 |
PE · Peru | 5 |
ZA · South Africa | 4 |
IT · Italy | 4 |
CO · Colombia | 4 |
MX · Mexico | 2 |
TR · Turkey | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS45899 · VNPT Corp | 4 |
AS26599 · TELEFÔNICA BRASIL S.A | 4 |
AS6147 · INTEGRATEL PERÚ S.A.A. | 4 |
AS18881 · TELEFÔNICA BRASIL S.A | 3 |
AS9829 · National Internet Backbone | 3 |
AS7552 · Viettel Group | 2 |
AS3269 · Telecom Italia S.p.A. | 2 |
AS9121 · Turk Telekomunikasyon Anonim Sirketi | 2 |
AS8151 · Uninet S.A. de C.V. | 2 |
AS1267 · WIND TRE S.P.A. | 2 |