Let's Debug

Test result for devc0n.nl using http-01

devc0n.nl has an AAAA (IPv6) record (2a05:d018:964:c0b:ca65:7773:2dd7:d9bd) but a test request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address. You should either ensure that validation requests to this domain succeed over IPv6, or remove its AAAA record.
A timeout was experienced while communicating with devc0n.nl/2a05:d018:964:c0b:ca65:7773:2dd7:d9bd: Get "http://devc0n.nl/.well-known/acme-challenge/letsdebug-test": context deadline exceeded

Trace:
@0ms: Making a request to http://devc0n.nl/.well-known/acme-challenge/letsdebug-test (using initial IP 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd)
@0ms: Dialing 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd
@10006ms: Experienced error: context deadline exceeded
Debug
Requests made to the domain
Request to: devc0n.nl/2a05:d018:964:c0b:ca65:7773:2dd7:d9bd, Result: [Address=2a05:d018:964:c0b:ca65:7773:2dd7:d9bd,Address Type=IPv6,Server=,HTTP Status=0], Issue: AAAANotWorking
Trace:
@0ms: Making a request to http://devc0n.nl/.well-known/acme-challenge/letsdebug-test (using initial IP 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd)
@0ms: Dialing 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd
@10006ms: Experienced error: context deadline exceeded

Request to: devc0n.nl/92.109.54.16, Result: [Address=92.109.54.16,Address Type=IPv4,Server=nginx/1.18.0,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://devc0n.nl/.well-known/acme-challenge/letsdebug-test (using initial IP 92.109.54.16)
@0ms: Dialing 92.109.54.16
@215ms: Server response: HTTP 404 Not Found

Debug
A and AAAA records found for this domain
devc0n.nl. 0 IN A 92.109.54.16
devc0n.nl. 0 IN AAAA 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd
Challenge update failures for devc0n.nl in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/6664469973
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": 2a05:d018:964:c0b:ca65:7773:2dd7:d9bd: Invalid response from http://devc0n.nl/.well-known/acme-challenge/eoClKnSadowXklUb89zymG_atwMs2SO6RCKGFHZvOvg: "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n<!doctype html><html lang=\"nl\"><head> <meta charset=\"UTF-8\"> <meta name="
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for devc0n.nl is: nl
Debug
The current status.io status for Let's Encrypt
Operational

Submitted Jan 20 15:29:37 2023. Sat in queue for 3ms. Completed in 12s. Hide verbose information.