TCP SYN (p0f)
6:50+14:0:1360:65535,13:mss,sok,ts,nop,ws:flow:0
first seen 2026-07-07 09:00 · last seen 2026-10-31 15:57 · JSON
Last 7 days (22 observations)
Distinct clients per day (last 30 days, peak 10/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 | 50+14 |
| Options length | 0 |
| MSS | 1360 |
| Window size | 65535 |
| Window scale | 13 |
| 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 |
|---|---|
t13d1518h2_8daaf6152771_4980c97edce0 | 51 |
t13d3013h1_1d37bd780c83_ecd0401ec68b | 11 |
t13d3013h1_1d37bd780c83_8537cf56674e | 6 |
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. | 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 |
t12d190800_d83cc789557e_7af1ed941c26 | 1 |
t13d1511h2_8daaf6152771_78e6aca7449b | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nr12enus_54b4638ab28b_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 152.0.7977.83, chrome 151.0.7922.137, +60 more.The fingerprint page shows the full measured match list. More on the catalog. | 38 |
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, +37 more.The fingerprint page shows the full measured match list. More on the catalog. | 13 |
ge11nn040000_e1d2031bdfea_000000000000_000000000000 | 11 |
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 |
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
po11nn07enus_7d361e250c48_000000000000_000000000000 | 1 |
ge20nr13enus_05d774e75578_000000000000_000000000000 | 1 |
ge20nr13frfr_9519c2577190_000000000000_000000000000 | 1 |
ge20nr14frfr_00c893c2b404_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
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 152.0.7977.83, +83 more.The fingerprint page shows the full measured match list. More on the catalog. | 19 |
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, +58 more.The fingerprint page shows the full measured match list. More on the catalog. | 14 |
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, +26 more.The fingerprint page shows the full measured match list. More on the catalog. | 10 |
1:65536;2:0;4:6291456;6:262144|15663105|5:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 156.0.8078.48, chrome 150.0.7871.128, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 10 |
1:65536;2:0;4:6291456;6:262144|15663105|7:1:0:256|m,a,s,p | 1 |
2:0;4:2097152;5:16384;6:16777216|5177345|0|m,s,a,p | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-4-8-1-3_1360_13 | 73 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 58 |
IN · India | 11 |
FR · France | 2 |
MA · Morocco | 1 |
DK · Denmark | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS13335 · Cloudflare, Inc. | 73 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.79, chromium 156.0.8078.73, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 45 |
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1, python-requests 2.34.2, curl 8.23.0, +3 more.The fingerprint page shows the full measured match list. More on the catalog. | 17 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).
| fingerprint | linked observations |
|---|---|
q13d0311h3_55b375c5d22e_653d80c3fe9d | 1 |