About Our Internet Scanning Activities
VisionHeight runs a controlled, ethical internet scanning program to collect publicly available service metadata across the public IPv4 space. We do this to help defenders identify exposed and abusable infrastructure earlier and reduce overall attack surface.
ON THIS PAGE
- What we do
- Why we scan the entire internet
- Nature of the traffic you may see
- Our scanning IP addresses
- Operational safeguards and opt out
What we do
VisionHeight runs a controlled, ethical internet scanning program to collect publicly available service metadata across the public IPv4 space. Our scanners perform application-layer probes only, to gather banners, TLS certificates, protocol versions, and similar non-intrusive information. No authentication attempts, no data modification, and no exploitation are performed.
Why we scan the entire internet
We scan the entire public IPv4 address space, not only customer assets, because misconfigured or exposed services anywhere on the internet can be abused by attackers. These misconfigurations may be used as staging points, reflectors, relays, or pivot hosts in larger campaigns. Global visibility lets us find and report exposures early, support defenders with actionable intelligence, and reduce the overall attack surface.
Nature of the traffic you may see
Traffic consists of short-lived TCP connection attempts and minimal protocol handshakes or header requests. For example, HTTP probes retrieve response headers, and TLS scans perform initial handshakes to enumerate certificates. "Failed read" messages in some logs typically result from targets closing connections during these short probes; they do not indicate exploitation.
Our scanning IP addresses
All reverse DNS records for our scanning hosts point to scan.visionheight.com.
18.116.101.220
18.119.209.50
3.13.137.35
3.130.168.2
3.131.220.121
3.134.216.108
3.139.242.79
3.151.194.164
3.18.186.238
3.20.201.240Operational safeguards and opt out
We operate scanners with conservative rate limits, and we maintain an exclusion list for organizations that request to be omitted. If you prefer not to receive scans from our infrastructure, or if you need technical details to validate the activity, contact us and we will add your network to our global exclusion list promptly.
Contact: optout@visionheight.com