TCP SYN (p0f)
4:55+9:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:0
first seen 2026-07-04 05:02 · last seen 2026-07-31 06:20 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 55+9 |
| Options length | 0 |
| MSS | 1460 |
| Window size | 65535 |
| Window scale | 6 |
| Options layout | mss,nop,ws,nop,nop,ts,sok,eol+1 |
| Quirks | df,ecn |
| 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 |
|---|---|
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. | 4 |
t13d2013h2_a09f3c656075_7f0f34a4126d Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.6.2, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d1713h1_ab0a1bf427ad_89ab6efea773 | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
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. | 4 |
ge11nn050000_ea6f06182064_000000000000_000000000000 | 1 |
ge20nn05engb_3f99bc624e90_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
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. | 4 |
2:0;4:2097152;3:100;9:1|10485760|0|m,s,p,a | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
65535_2-1-3-1-1-8-4-0-0_1460_6 | 6 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 | 3 |
curl/8.7.1 | 2 |
HackerNews/1566 CFNetwork/3860.600.12 Darwin/25.5.0 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
AU · Australia | 3 |
IL · Israel | 2 |
NZ · New Zealand | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS4764 · Aussie Fibre Pty Ltd | 3 |
AS208905 · Exelera Telecom Ltd | 2 |
AS9790 · Two Degrees Networks Limited | 1 |