TCP SYN (JA4T)
64240_2-4-8-1-3_1460_5
first seen 2026-07-01 15:02 · last seen 2026-09-15 21:45 · JSON
Last 7 days (2 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 | 64240 |
|---|---|
| Option kinds | 2-4-8-1-3 |
| MSS | 1460 |
| Window scale | 5 |
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 |
|---|---|
t13i170900_5b57614c22b0_78e6aca7449b | 2 |
t13d5311h1_ed6c8d7875f9_518fb456ca59 | 1 |
t13d1810h2_228bd4bf6806_cf80c7f419ad | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn07*000_fd87022947da_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 |
ge11nn070000_1ed44a9e06df_000000000000_000000000000 | 1 |
ge11nn050000_ad924a24daef_000000000000_000000000000 | 1 |
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, +7 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|---|
4:44+20:0:1460:mss*44,5:mss,sok,ts,nop,ws:df,id+:0 | 2 |
4:48+16:0:1460:mss*44,5:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:107+21:0:1460:mss*44,5:mss,sok,ts,nop,ws:df,id+:0 | 1 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
libredtail-http | 2 |
curl/8.12.1 | 1 |
TechFeedBot/1.0 (Lambda; content-aggregator) | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
KR · South Korea | 2 |
RU · Russia | 1 |
IN · India | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS17858 · LG POWERCOMM | 2 |
AS16509 · Amazon.com, Inc. | 1 |
AS8402 · PJSC "Vimpelcom" | 1 |