Let's Debug

Test result for khongcotien.top using tls-alpn-01

A test authorization for khongcotien.top to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Connection refused
Challenge update failures for khongcotien.top in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/1573443808
acme: error code 400 "urn:ietf:params:acme:error:connection": Connection refused
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for khongcotien.top is: top
Debug
The current status.io status for Let's Encrypt
Operational

Submitted Jan 19 09:51:37 2022. Sat in queue for 51ms. Completed in 7s. Hide verbose information.