TCP SYN (p0f)
4:48+16:0:1412:65535,9:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-20 19:20 · last seen 2026-10-27 19:20 · JSON
Last 7 days (1 observations)
Distinct clients per day (last 30 days, peak 4/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 | 4 |
|---|---|
| Initial TTL | 48+16 |
| Options length | 0 |
| MSS | 1412 |
| Window size | 65535 |
| Window scale | 9 |
| Options layout | mss,sok,ts,nop,ws |
| Quirks | df,id+ |
| 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, +28 more.The fingerprint page shows the full measured match list. More on the catalog. | 29 |
t13d4412h1_fd39b124ee10_58ed7828516f | 5 |
t13d1515h1_8daaf6152771_0a20fe35d3a5 | 4 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 2 |
t13d1515h1_8daaf6152771_de4a06bb82e3 | 2 |
t13d1512h2_8daaf6152771_ef7df7f74e48 | 2 |
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. | 1 |
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d4312h1_c7886603b240_b26ce05bbdd6 | 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, +39 more.The fingerprint page shows the full measured match list. More on the catalog. | 29 |
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. | 6 |
ge11nn13enus_9db22d02e17a_000000000000_000000000000 | 4 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 2 |
ge20nn010000_379fadc6c8b7_000000000000_000000000000 | 2 |
ge11nn14enus_4a2973d235de_000000000000_000000000000 | 2 |
ge20nn14zhcn_80da16e8057b_000000000000_000000000000 | 1 |
ge11nr19zhcn_4e9b73ab7510_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, +60 more.The fingerprint page shows the full measured match list. More on the catalog. | 30 |
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 2 |
1:65536;2:0;4:6291456;6:262144|15663105|1:0:0:256|m,a,s,p | 2 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-4-8-1-3_1412_9 | 47 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
CN · China | 34 |
PK · Pakistan | 7 |
NP · Nepal | 2 |
ID · Indonesia | 1 |
MA · Morocco | 1 |
EG · Egypt | 1 |
UY · Uruguay | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS4837 · CHINA UNICOM China169 Backbone | 13 |
AS4134 · CHINANET BACKBONE | 10 |
AS56041 · China Mobile communications corporation | 7 |
AS9808 · China Mobile Communications Group Co., Ltd. | 4 |
AS17501 · WorldLink Communications Pvt Ltd | 2 |
AS141342 · FIBERISH (PVT) LTD | 2 |
AS8452 · TE-AS | 1 |
AS36925 · MEDITELECOM | 1 |
AS6057 · Administracion Nacional de Telecomunicaciones | 1 |
AS136525 · Wancom (Pvt) Ltd. | 1 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |