Checker - Whitelisting

For customers with higher security controls, automated scanning of domain names may be restricted or blocked by firewalls, web application firewalls (WAFs), or intrusion prevention systems. In these cases, we provide the following static IP addresses so they can be explicitly allowlisted, ensuring uninterrupted connectivity and accurate monitoring without triggering security defences.

Whitelist by IP Address

• US checker can be found at:
  • 15.204.47.172/32

• UK checker can be found at:
  • 198.244.165.228/32

• AU checker can be found at:
  • 51.161.174.41/32

Security Note

This solution is secure — it won’t expose your site to new risks. It only makes a small, controlled exception that recognizes our scanner as trusted. No other traffic is affected.