1. General Results, most used to calculate the result A name "google-security.epizy.com" is subdomain, public suffix is ".com", top-level-domain is ".com", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services", num .com-domains preloaded: 83852 (complete: 216710) A Good: All ip addresses are public addresses Warning: Only one ip address found: google-security.epizy.com has only one ip address. Warning: Only one ip address found: www.google-security.epizy.com has only one ip address. Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: google-security.epizy.com has no ipv6 address. Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: www.google-security.epizy.com has no ipv6 address. A Good: No asked Authoritative Name Server had a timeout A Good: No cookie sent via http. HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List. A Good: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):0 complete Content-Type - header (6 urls) http://google-security.epizy.com/ 185.27.134.33 Url with incomplete Content-Type - header - missing charset http://www.google-security.epizy.com/ 185.27.134.33 Url with incomplete Content-Type - header - missing charset https://google-security.epizy.com/ 185.27.134.33 Url with incomplete Content-Type - header - missing charset https://www.google-security.epizy.com/ 185.27.134.33 Url with incomplete Content-Type - header - missing charset http://google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Url with incomplete Content-Type - header - missing charset http://www.google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Url with incomplete Content-Type - header - missing charset B https://google-security.epizy.com/ 185.27.134.33 Missing HSTS-Header B https://www.google-security.epizy.com/ 185.27.134.33 Missing HSTS-Header C Error - no preferred version www or non-www. Select one version as preferred version, then add a redirect https + not-preferred version to https + preferred version. Perhaps in your port 443 vHost something like "RewriteEngine on" + "RewriteCond %{SERVER_NAME} = example.com" + "ReWriteRule ^ https://www.example.com%{REQUEST_URI} [END,QSA,R=permanent]" (three rows, without the "). That should create a redirect https + example.com ⇒ https + www.example.com. Or switch both values to use the non-www version as your preferred version. C Error - more then one version with Http-Status 200. After all redirects, all users (and search engines) should see the same https url: Non-www or www, but not both with http status 200. H Fatal error: http result with http-status 200, no encryption. Add a redirect http ⇒ https, so every connection is secure. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. J https://google-security.epizy.com/ 185.27.134.33 Fatal: Script /aes.js found. Looks like your hoster has a Bot-Check-Detection, so Letsencrypt can't check your http-validation file. J https://www.google-security.epizy.com/ 185.27.134.33 Fatal: Script /aes.js found. Looks like your hoster has a Bot-Check-Detection, so Letsencrypt can't check your http-validation file. J http://google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Fatal: Script /aes.js found. Looks like your hoster has a Bot-Check-Detection, so Letsencrypt can't check your http-validation file. J http://www.google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Fatal: Script /aes.js found. Looks like your hoster has a Bot-Check-Detection, so Letsencrypt can't check your http-validation file. O google-security.epizy.com / 185.27.134.33 / 443 Old connection: Cipher Suites without Forward Secrecy (FS) found. Remove all of these Cipher Suites, use only Cipher Suites with Forward Secrecy: Starting with ECDHE- or DHE - the last "E" says: "ephemeral". Or use Tls.1.3, then all Cipher Suites use FS. 14 Cipher Suites without Forward Secrecy found O www.google-security.epizy.com / 185.27.134.33 / 443 Old connection: Cipher Suites without Forward Secrecy (FS) found. Remove all of these Cipher Suites, use only Cipher Suites with Forward Secrecy: Starting with ECDHE- or DHE - the last "E" says: "ephemeral". Or use Tls.1.3, then all Cipher Suites use FS. 14 Cipher Suites without Forward Secrecy found P https://185.27.134.33/ 185.27.134.33 Error creating a TLS-Connection: No more details available. Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain google-security.epizy.com, 1 ip addresses. Info: Checking the ip addresses of that domain name not exact one certificate found. So it's impossible to check if that domain requires Server Name Indication (SNI).: Domain www.google-security.epizy.com, 1 ip addresses. B No _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.google-security.epizy.com 2. Header-Checks (alpha, started 2022-10-23, may be buggy / incomplete) F google-security.epizy.com 185.27.134.33 Content-Security-Policy Critical: Missing Header: F google-security.epizy.com 185.27.134.33 X-Content-Type-Options Critical: Missing Header: F google-security.epizy.com 185.27.134.33 Referrer-Policy Critical: Missing Header: F google-security.epizy.com 185.27.134.33 Permissions-Policy Critical: Missing Header: F www.google-security.epizy.com 185.27.134.33 Content-Security-Policy Critical: Missing Header: F www.google-security.epizy.com 185.27.134.33 X-Content-Type-Options Critical: Missing Header: F www.google-security.epizy.com 185.27.134.33 Referrer-Policy Critical: Missing Header: F www.google-security.epizy.com 185.27.134.33 Permissions-Policy Critical: Missing Header: 3. DNS- and NameServer - Checks A Info:: 9 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 5 Name Servers. A Info:: 9 Queries complete, 5 with IPv6, 4 with IPv4. Warning: Only some DNS Queries done via ipv6. IPv6 is the future, so the name servers of your name servers should have ipv6 addresses. A Good: Some ip addresses of name servers found with the minimum of two DNS Queries. One to find the TLD-Zone, one to ask the TLD-Zone.ns1.byet.org (198.251.86.152), ns2.byet.org (198.251.86.153), ns3.byet.org (198.251.86.154) A Good (1 - 3.0):: An average of 1.8 queries per domain name server required to find all ip addresses of all name servers. A Info:: 5 different Name Servers found: ns1.byet.org, ns1.epizy.com, ns2.byet.org, ns2.epizy.com, ns3.byet.org, 3 Name Servers included in Delegation: ns1.byet.org, ns2.byet.org, ns3.byet.org, 2 Name Servers included in 2 Zone definitions: ns1.epizy.com, ns2.epizy.com, 1 Name Servers listed in SOA.Primary: ns1.epizy.com. A Good: Only one SOA.Primary Name Server found.: ns1.epizy.com. Error: SOA.Primary Name Server not included in the delegation set.: ns1.epizy.com. X Fatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.epizy.com (198.251.86.154): Delegation: ns1.byet.org, ns2.byet.org, ns3.byet.org, Zone: ns1.epizy.com, ns2.epizy.com. Name Servers defined in Delegation, missing in Zone: ns1.byet.org, ns2.byet.org, ns3.byet.org.Name Servers defined in Zone, missing in Delegation: ns1.epizy.com, ns2.epizy.com. X Fatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.byet.org (198.251.86.153): Delegation: ns1.byet.org, ns2.byet.org, ns3.byet.org, Zone: ns1.epizy.com, ns2.epizy.com. Name Servers defined in Delegation, missing in Zone: ns1.byet.org, ns2.byet.org, ns3.byet.org.Name Servers defined in Zone, missing in Delegation: ns1.epizy.com, ns2.epizy.com. X Fatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.epizy.com (198.251.86.152): Delegation: ns1.byet.org, ns2.byet.org, ns3.byet.org, Zone: ns1.epizy.com, ns2.epizy.com. Name Servers defined in Delegation, missing in Zone: ns1.byet.org, ns2.byet.org, ns3.byet.org.Name Servers defined in Zone, missing in Delegation: ns1.epizy.com, ns2.epizy.com. X Fatal: Inconsistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns3.byet.org (198.251.86.154): Delegation: ns1.byet.org, ns2.byet.org, ns3.byet.org, Zone: ns1.epizy.com, ns2.epizy.com. Name Servers defined in Delegation, missing in Zone: ns1.byet.org, ns2.byet.org, ns3.byet.org.Name Servers defined in Zone, missing in Delegation: ns1.epizy.com, ns2.epizy.com. A Good: All Name Server Domain Names have a Public Suffix. A Good: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address. A Good: All Name Server ip addresses are public. A Info: Ipv4-Subnet-list: 5 Name Servers, 1 different subnets (first Byte): 198., 1 different subnets (first two Bytes): 198.251., 1 different subnets (first three Bytes): 198.251.86. X Fatal: All Name Server IPv4 addresses from the same subnet. Check https://www.iana.org/help/nameserver-requirements to learn some basics about name server configurations. If you manage these name servers, fix it. If it's your provider, change your provider.: A Good: Nameserver supports TCP connections: 5 good Nameserver A Good: Nameserver supports Echo Capitalization: 5 good Nameserver A Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 5 good Nameserver Nameserver doesn't pass all EDNS-Checks: ns1.byet.org / 198.251.86.152: OP100: ok. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: ok (ns31167656.ip-51-91-152.eu). COOKIE: ok. CLIENTSUBNET: fatal timeout. Nameserver doesn't pass all EDNS-Checks: ns2.epizy.com: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result. Nameserver doesn't pass all EDNS-Checks: ns2.epizy.com: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result. 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. 4. Content- and Performance-critical Checks https://google-security.epizy.com/ 185.27.134.33 Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header. https://www.google-security.epizy.com/ 185.27.134.33 Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header. https://google-security.epizy.com/ 185.27.134.33 Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space. https://www.google-security.epizy.com/ 185.27.134.33 Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space. A Good: Every https connection via port 443 supports the http/2 protocol via ALPN. https://google-security.epizy.com/ 185.27.134.33 Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 1 script elements without defer/async. https://www.google-security.epizy.com/ 185.27.134.33 Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 1 script elements without defer/async. http://google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 1 script elements without defer/async. http://www.google-security.epizy.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 185.27.134.33 Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 1 script elements without defer/async. Warning: CSS / JavaScript found without GZip support. Send these ressources with GZip. 4 external CSS / JavaScript files without GZip found - 0 with GZip, 4 complete Warning: CSS / JavaScript files with a missing or too short Cache-Control header found. Browsers should cache and re-use these files. 4 external CSS / JavaScript files without Cache-Control-Header, 0 with Cache-Control, but no max-age, 0 with Cache-Control max-age too short (minimum 7 days), 0 with Cache-Control long enough, 4 complete. A Good: All checked attribute values are enclosed in quotation marks (" or '). A Info: No img element found, no alt attribute checked 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: 483083 milliseconds, 483.083 seconds