TCP SYN (JA4T)
64240_2-4-8-1-3_1400_1
first seen 2026-07-30 22:08 · last seen 2026-09-15 04:42 · JSON
Last 7 days (12 observations)
Distinct clients per day (last 30 days, peak 9/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 | 1400 |
| 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_de4a06bb82e3 | 17 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 14 |
t13d2812h2_257f3020b3a2_cbb9361b6bf9 | 4 |
t13d1713h1_ab0a1bf427ad_ecd0401ec68b Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 21 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 10 |
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. | 4 |
ge11nn040000_177aea7101ae_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
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|3:0:0:256|m,a,s,p | 2 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 17 |
SA · Saudi Arabia | 3 |
ID · Indonesia | 2 |
ZA · South Africa | 2 |
TR · Turkey | 2 |
PH · Philippines | 2 |
IQ · Iraq | 2 |
MX · Mexico | 1 |
FR · France | 1 |
IL · Israel | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS17639 · Converge ICT Solutions Inc. | 2 |
AS203214 · Hulum Almustakbal Company for Communication Engineering and Services Ltd | 2 |
AS28656 · BTT TELECOMUNICACOES S.A. | 2 |
AS43766 · Mobile Telecommunication Company Saudi Arabia Joint-Stock company | 2 |
AS265175 · AS SISTEMAS LTDA | 2 |
AS264923 · JB Telecom LTDA | 2 |
AS35819 · Etihad Etisalat, a joint stock company | 1 |
AS8386 · Vodafone Net Iletisim Hizmetler AS | 1 |
AS17072 · TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V. | 1 |
AS20978 · TT Mobil Iletisim Hizmetleri A.S | 1 |