TCP SYN (JA4T)
64240_2-1-3-1-1-4_1300_8
first seen 2026-07-12 20:04 · last seen 2026-09-14 09:04 · JSON
Last 7 days (4 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 | 2-1-3-1-1-4 |
| MSS | 1300 |
| Window scale | 8 |
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 |
|---|---|
t13d0516h2_e133e205ac38_d8a2da3f94cd | 3 |
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 |
t13d0516h2_e133e205ac38_02713d6af862 | 2 |
t13d2913h1_723694b0fccc_5671b5df5029 | 2 |
t13d1712h1_ab0a1bf427ad_882d495ac381 | 2 |
t13d0416h2_39e807bd56df_d8a2da3f94cd | 1 |
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d0514h2_e133e205ac38_2d677a1cc7a2 | 1 |
t13d1812h1_85036bcba153_b26ce05bbdd6 | 1 |
t13d1911h2_9dc949149365_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
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. | 9 |
ge20nn11ruru_3901d4197baf_000000000000_000000000000 | 1 |
ge20nr16heil_94fdc06e0694_000000000000_000000000000 | 1 |
ge11nr11fifi_835281d8e5d9_000000000000_000000000000 | 1 |
ge11nr11frbe_835281d8e5d9_000000000000_000000000000 | 1 |
ge11nn16enus_ec94e3fa46ec_000000000000_000000000000 | 1 |
ge11nn060000_4a973ba5b0a7_000000000000_000000000000 | 1 |
po11nn080000_cf0caf2c2f1f_000000000000_000000000000 | 1 |
ge20nr020000_b89ce445e0b3_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
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. | 10 |
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. | 1 |
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 9 |
ID · Indonesia | 4 |
EG · Egypt | 2 |
RU · Russia | 1 |
IL · Israel | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS40222 · Credit One Bank | 9 |
AS139952 · PT Trisari Data Indonusa | 4 |
AS36935 · Vodafone Data | 2 |
AS25159 · PJSC MegaFon | 1 |
AS47962 · Connect 972 | 1 |