1. General Results, most used to calculate the result A name "say hello.ie" is domain, public suffix is ".ie", top-level-domain is ".ie", top-level-domain-type is "country-code", Country is Ireland, tld-manager is "University College Dublin
Computing Services
Computer Centre", num .ie-domains preloaded: 213 (complete: 175327) A Good: No asked Authoritative Name Server had a timeout HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List. 2. Header-Checks 3. DNS- and NameServer - Checks A A A Info:: 0 different Name Servers found: , 0 Name Servers included in Delegation: , 0 Name Servers included in 0 Zone definitions: , 0 Name Servers listed in SOA.Primary: . A Good: Nameserver supports TCP connections: 6 good Nameserver A Good: Nameserver supports Echo Capitalization: 6 good Nameserver A Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 6 good Nameserver A Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 4 good Nameserver Nameserver doesn't pass all EDNS-Checks: b.ns.ie: OP100: ok. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: ok. COOKIE: SOA expected, but NOT found, NOERR expected, BADVER found, Version 0 expectend and found. CLIENTSUBNET: ok. Nameserver doesn't pass all EDNS-Checks: h.ns.ie: OP100: ok. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: ok (ns2.th2.nic.fr). COOKIE: SOA expected, but NOT found, NOERR expected, BADVER found, Version 0 expectend and found. CLIENTSUBNET: ok. 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 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: 18447 milliseconds, 18.447 seconds