TCP SYN (p0f)
4:51+13:0:1460:mss*20,4:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-07-24 23:32 · last seen 2026-08-18 06:59 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 51+13 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*20 |
| Window scale | 4 |
| 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 |
|---|---|
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
t13d3013h2_1d37bd780c83_8537cf56674e Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.18.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
t13d4412h1_fd39b124ee10_58ed7828516f | 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_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. | 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. | 3 |
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
29200_2-4-8-1-3_1460_4 | 5 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
curl/8.5.0 | 3 |
curl/8.14.1 | 1 |
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 4 |
UA · Ukraine | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS7922 · Comcast Cable Communications, LLC | 2 |
AS7018 · AT&T Enterprises, LLC | 1 |
AS19901 · Brightspeed | 1 |
AS24812 · RPC HomeNet Ltd. | 1 |