TCP SYN (p0f)
4:114+14:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0
first seen 2026-06-11 01:59 · last seen 2026-09-15 19:21 · JSON
Last 7 days (2 observations)
Distinct clients per day (last 30 days, peak 1/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 | 114+14 |
| Options length | 0 |
| MSS | 1460 |
| Window size | mss*44 |
| Window scale | 8 |
| Options layout | mss,nop,ws,nop,nop,sok |
| Quirks | df,id+,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)
HTTP request (JA4H)
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
2:0;4:65535|67043329|0|m,s,a,p | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
64240_2-1-3-1-1-4_1460_8 | 7 |
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
NL · Netherlands | 9 |
DE · Germany | 3 |
US · United States | 2 |
RO · Romania | 2 |
JP · Japan | 1 |
GB · United Kingdom | 1 |
SG · Singapore | 1 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS210558 · 1337 Services GmbH | 6 |
AS204428 · SS-Net | 2 |
AS49581 · Ferdinand Zink trading as Tube-Hosting | 2 |
AS64107 · RACK SPHERE HOSTING S.A. | 1 |
AS20473 · The Constant Company, LLC | 1 |
AS25369 · Hydra Communications Ltd | 1 |
AS394152 · L Cube Strategic Support Services LLC | 1 |
AS213388 · IIC RAIL LIMITED | 1 |
AS14061 · DigitalOcean, LLC | 1 |
AS197170 · TechTies Inc. | 1 |