4.1 Monitoring IPs
Network source IPs used by CertKit domain monitoring.
CertKit checks monitored public hosts from the following IP addresses:
148.113.162.167144.217.73.23215.235.60.112
If monitoring cannot connect to a public host, check your firewall, WAF, load balancer, and application access rules. Common bot filters and managed security features, such as Cloudflare Bot Fight Mode, Cloudflare WAF rules, and other bot-management products, can also block automated certificate checks. Whitelist these IPs anywhere inbound HTTPS traffic is restricted.