TCP SYN (p0f)
4:54+10:0:1460:mss*29,13:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-08-27 06:32 · last seen 2026-10-26 16:47 · JSON
Last 7 days (4 observations)
Distinct clients per day (last 30 days, peak 7/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 | 54+10 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*29 |
| Window scale | 13 |
| 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 |
|---|---|
t13d4312h1_c7886603b240_b26ce05bbdd6 | 53 |
t13d2913h1_723694b0fccc_5671b5df5029 | 10 |
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. | 7 |
t13d1516h2_8daaf6152771_e5627efa2ab1 | 1 |
t13d3113h2_e8f1e7e78f70_ce5650b735ce | 1 |
t13d4907h2_0d8feac7bc37_7395dae3b2f3 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d1313h2_f57a46bbacb6_9249cab70c77 | 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. | 53 |
ge11nr11enus_835281d8e5d9_000000000000_000000000000 | 9 |
ge20nr16enus_94fdc06e0694_000000000000_000000000000 | 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. | 2 |
ge20nr020000_fb4f949fd323_000000000000_000000000000 | 1 |
ge20nn12enus_60f823d07c94_000000000000_000000000000 | 1 |
ge11nr11enus_b350a6a7c155_000000000000_000000000000 | 1 |
ge20nn16enus_94fdc06e0694_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, +57 more.The fingerprint page shows the full measured match list. More on the catalog. | 7 |
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 2 |
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
42340_2-4-8-1-3_1460_13 | 74 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 74 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS5650 · Verizon Business | 39 |
AS7029 · Windstream Communications LLC | 20 |
AS6079 · RCN | 15 |
TLS supported groups
| fingerprint | co-occurrences |
|---|---|
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog. | 39 |