Let's Debug

Test result for av.collegeheightscasper.org using http-01

av.collegeheightscasper.org has multiple IP addresses in its DNS records. While they appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that some of the IP addresses may unintentionally point to different servers, which would cause validation to fail.
[Address=2001:8d8:100f:f000::217,Address Type=IPv6,Server=nginx/1.10.3,HTTP Status=204] vs [Address=198.71.48.67,Address Type=IPv4,Server=Apache/2.4.41 (Ubuntu),HTTP Status=404]
Debug
Requests made to the domain
Request to: av.collegeheightscasper.org/2001:8d8:100f:f000::217, Result: [Address=2001:8d8:100f:f000::217,Address Type=IPv6,Server=nginx/1.10.3,HTTP Status=204], Issue:
Trace:
@0ms: Making a request to http://av.collegeheightscasper.org/.well-known/acme-challenge/letsdebug-test (using initial IP 2001:8d8:100f:f000::217)
@0ms: Dialing 2001:8d8:100f:f000::217
@198ms: Server response: HTTP 204

Request to: av.collegeheightscasper.org/198.71.48.67, Result: [Address=198.71.48.67,Address Type=IPv4,Server=Apache/2.4.41 (Ubuntu),HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://av.collegeheightscasper.org/.well-known/acme-challenge/letsdebug-test (using initial IP 198.71.48.67)
@0ms: Dialing 198.71.48.67
@66ms: Server response: HTTP 404 Not Found

Debug
A and AAAA records found for this domain
av.collegeheightscasper.org. 0 IN A 198.71.48.67
av.collegeheightscasper.org. 0 IN AAAA 2001:8d8:100f:f000::217
Challenge update failures for av.collegeheightscasper.org in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/248722938
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://av.collegeheightscasper.org/.well-known/acme-challenge/VSJ6z_0ws-zECjjDuNhGtq_kpVsrVqLso0FtiqdQn9k [2001:8d8:100f:f000::217]: 204
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for av.collegeheightscasper.org is: org
Debug
The current status.io status for Let's Encrypt
Operational

Submitted Aug 8 14:48:16 2021. Sat in queue for 3ms. Completed in 5s. Hide verbose information.