TCP SYN (p0f)
4:36+28:0:1460:65228,7:mss,nop,ws,sok,ts:df:0
first seen 2026-08-17 13:12 · last seen 2026-08-17 15:32 · 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 | 4 |
|---|---|
| Initial TTL | 36+28 |
| Options length | 0 |
| MSS | 1460 |
| Window size | 65228 |
| Window scale | 7 |
| Options layout | mss,nop,ws,sok,ts |
| Quirks | df |
| 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 |
|---|---|
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. | 35 |
t13d4913h2_bd868743f55c_aac333855136 | 8 |
t13d3013h1_1d37bd780c83_8537cf56674e | 4 |
t13d2712h2_b4f9224df7c1_cbb9361b6bf9 | 2 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn11ruru_3901d4197baf_000000000000_000000000000 | 16 |
ge20nr10ruru_b3034183f430_000000000000_000000000000 | 11 |
ge20nr11ruru_3901d4197baf_000000000000_000000000000 | 4 |
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. | 4 |
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
ge20nn010000_379fadc6c8b7_000000000000_000000000000 | 2 |
ge20nr12enus_f8a3a1e39dc3_000000000000_000000000000 | 2 |
ge20nn13enus_e2c7f8e37efc_000000000000_000000000000 | 1 |
ge20nn14enus_3cf2e071bbd5_000000000000_000000000000 | 1 |
ge20nn13enus_e66716e13e58_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
3:1000;2:0;4:6291456;1:4096|15663105|0|s,m,p,a | 8 |
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. | 7 |
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 154.0, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 5 |
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:42|m,p,a,s | 4 |
1:65536;2:0;4:131072;5:16384|12517377|1:0:0:42|m,p,a,s | 4 |
1:65536;2:0;4:131072;5:16384|12517377|7:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 155.0, firefox 154.0, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:22|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0.3, firefox 154.0, firefox 153.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
1:65536;2:0;4:131072;5:16384|12517377|7:0:0:42|m,p,a,s | 2 |
1:65536;2:0;4:6291456;6:262144;4:1048576|15663105|1:0:0:256|m,a,s,p | 2 |
1:65536;2:0;4:131072;5:16384|12517377|9:0:0:42|m,p,a,s | 2 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65228_2-1-3-4-8_1460_7 | 49 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
RU · Russia | 49 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS41601 · NEO Print Ltd. | 49 |