TCP SYN (p0f)
4:44+20:0:1412:mss*1,9:mss,sok,ts,nop,ws:df,id+:0
first seen 2026-08-15 16:10 · last seen 2026-08-15 16:10 · JSON
Decomposed attributes
| IP version | 4 |
|---|---|
| Initial TTL | 44+20 |
| Options length | 0 |
| MSS | 1412 |
| Window size | mss*1 |
| Window scale | 9 |
| 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 |
|---|---|
t13d1911h2_9dc949149365_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge20nn04zhcn_6e6dd1d8c348_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
2:0;4:4194304;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13, go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
1412_2-4-8-1-3_1412_9 | 1 |
User-Agent
| fingerprint | co-occurrences |
|---|---|
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
HK · Hong Kong SAR China | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS135377 · UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 1 |