A name "campo-randale.de" is domain, public suffix is "de", top-level-domain-type is "country-code", Country is Germany, tld-manager is "DENIC eG" A good: All ip addresses are public addresses A good: No asked Authoritative Name Server had a timeout A Good: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):0 complete Content-Type - header (4 urls) http://campo-randale.de/ 217.160.157.99 Url with incomplete Content-Type - header - missing charset http://campo-randale.de:443/ 217.160.157.99 Url with incomplete Content-Type - header - missing charset http://www.campo-randale.de:443/ 217.160.157.99 Url with incomplete Content-Type - header - missing charset http://www.campo-randale.de/ 217.160.157.99 Url with incomplete Content-Type - header - missing charset C Error - no version with Http-Status 200 H fatal error: No https - result with http-status 200, no encryption M http://campo-randale.de/ 217.160.157.99 403 Misconfiguration - main pages should never send http status 400 - 499 M http://campo-randale.de:443/ 217.160.157.99 403 Misconfiguration - main pages should never send http status 400 - 499 M http://www.campo-randale.de:443/ 217.160.157.99 403 Misconfiguration - main pages should never send http status 400 - 499 M http://www.campo-randale.de/ 217.160.157.99 403 Misconfiguration - main pages should never send http status 400 - 499 Q http://campo-randale.de:443/ 217.160.157.99 403 Misconfiguration: http sent over port 443. Wrong port forwarding port 443 to port 80 or wrong vHost definition. If you use a virtual Host <VirtualHost ip-address:443>, try <VirtualHost *:443>. Q http://www.campo-randale.de:443/ 217.160.157.99 403 Misconfiguration: http sent over port 443. Wrong port forwarding port 443 to port 80 or wrong vHost definition. If you use a virtual Host <VirtualHost ip-address:443>, try <VirtualHost *:443>. A Good: Nameserver supports TCP connections: 8 good Nameserver A Good: Nameserver supports Echo Capitalization: 8 good Nameserver A Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 8 good Nameserver A Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 8 good Nameserver A Good: All SOA have the same Serial Number Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries. A Good: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx A Duration: 41704 milliseconds, 41.704 seconds