TCP SYN (JA4T)
64240_2-4-8-1-3_1360_7
first seen 2026-06-29 23:42 · last seen 2026-09-15 05:09 · JSON
Last 7 days (2 observations)
Distinct clients per day (last 30 days, peak 5/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 | 1360 |
| Window scale | 7 |
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 |
|---|---|
t13d4412h1_fd39b124ee10_58ed7828516f | 31 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 14 |
t13d131100_f57a46bbacb6_e5728521abd4 | 12 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 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. | 4 |
t13d1717h2_5b57614c22b0_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
t13d181100_85036bcba153_d41ae481755e | 2 |
t13i170900_5b57614c22b0_78e6aca7449b | 2 |
t13d1312h2_f57a46bbacb6_e5728521abd4 | 1 |
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. | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog. | 31 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 18 |
ge11nr17enus_9f4f72c36cf0_000000000000_000000000000 | 9 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 8 |
ge20nn10ruru_d353d425b0bb_000000000000_000000000000 | 4 |
ge20nr12enus_54b4638ab28b_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, edge 151.0.4129.93, +36 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
ge11nr16enus_73e9eec732a9_000000000000_000000000000 | 3 |
ge11nn040000_e1d2031bdfea_000000000000_000000000000 | 3 |
ge20nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +23 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
ge20nn04enus_39a3ba4480e8_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: urlsession 6.1.2.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;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
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. | 3 |
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|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 |
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
BR · Brazil | 18 |
NL · Netherlands | 16 |
AT · Austria | 9 |
UA · Ukraine | 5 |
UZ · Uzbekistan | 5 |
RO · Romania | 4 |
IL · Israel | 4 |
US · United States | 3 |
SG · Singapore | 2 |
IT · Italy | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS202412 · Omegatech LTD | 12 |
AS9009 · M247 Europe SRL | 5 |
AS12365 · ISP Sarkor Telecom | 5 |
AS8412 · T-Mobile Austria GmbH | 5 |
AS12400 · Partner Communications Ltd. | 4 |
AS25255 · ==> TELE2 AUSTRIA <== | 4 |
AS216139 · Iron Hosting Centre LTD | 4 |
AS31898 · Oracle Corporation | 3 |
AS15895 · Kyivstar PJSC | 3 |
AS263634 · TACNET TELECOM | 2 |