Let's Debug

Test result for dev.classyapi.kilterapp.com using http-01

Error
dev.classyapi.kilterapp.com has an A (IPv4) record (3.145.23.184) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with dev.classyapi.kilterapp.com/3.145.23.184: Get "http://dev.classyapi.kilterapp.com/.well-known/acme-challenge/letsdebug-test": dial tcp 3.145.23.184:80: i/o timeout

Trace:
@0ms: Making a request to http://dev.classyapi.kilterapp.com/.well-known/acme-challenge/letsdebug-test (using initial IP 3.145.23.184)
@0ms: Dialing 3.145.23.184
@10001ms: Experienced error: dial tcp 3.145.23.184:80: i/o timeout
A test authorization for dev.classyapi.kilterapp.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://dev.classyapi.kilterapp.com/.well-known/acme-challenge/PvjNRoYzZ6zshfDlbpwlnigOfhU2Z9SHYKgMGE_Df3k: Timeout during connect (likely firewall problem)
Debug
Requests made to the domain
Request to: dev.classyapi.kilterapp.com/3.145.23.184, Result: [Address=3.145.23.184,Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://dev.classyapi.kilterapp.com/.well-known/acme-challenge/letsdebug-test (using initial IP 3.145.23.184)
@0ms: Dialing 3.145.23.184
@10001ms: Experienced error: dial tcp 3.145.23.184:80: i/o timeout

Debug
A and AAAA records found for this domain
dev.classyapi.kilterapp.com. 0 IN A 3.145.23.184
Challenge update failures for dev.classyapi.kilterapp.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/2343308003
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://dev.classyapi.kilterapp.com/.well-known/acme-challenge/PvjNRoYzZ6zshfDlbpwlnigOfhU2Z9SHYKgMGE_Df3k: Timeout during connect (likely firewall problem)
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for dev.classyapi.kilterapp.com is: com
Debug
The current status.io status for Let's Encrypt
Operational

Submitted Apr 18 17:55:49 2022. Sat in queue for 5ms. Completed in 23s. Hide verbose information.