TCP SYN (p0f)
6:40+24:0:1282:mss*45,7:mss,sok,ts,nop,ws:flow:0
first seen 2026-09-04 18:42 · last seen 2026-09-04 19:44 · JSON
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
| IP version | 6 |
|---|---|
| Initial TTL | 40+24 |
| Options length | 0 |
| MSS | 1282 |
| Window size | mss*45 |
| Window scale | 7 |
| Options layout | mss,sok,ts,nop,ws |
| Quirks | flow |
| Payload class | 0 |
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 |
|---|---|
t13d1516h2_8daaf6152771_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +24 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
t13d3113h2_e8f1e7e78f70_ce5650b735ce | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn14enin_3fb598f484fb_000000000000_000000000000 | 3 |
ge20cn14enin_3fb598f484fb_eae3c42be8f4_7b2c2e7e621b | 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 |
|---|---|
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256,3:1:0:256|m,a,s,p | 4 |
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 (JA4T)
| fingerprint | co-occurrences |
|---|---|
64800_2-4-8-1-3_1282_7 | 5 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 | 4 |
curl/7.81.0 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
IN · India | 5 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS55836 · Reliance Jio Infocomm Limited | 5 |