Using the online tool Let's Debug yields these results
https://letsdebug.net/arcgis.lcwc911.us/1958147
ANotWorking
ERROR
arcgis.lcwc911.us has an A (IPv4) record (66.216.164.13) 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 arcgis.lcwc911.us/66.216.164.13: Get "http://arcgis.lcwc911.us/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://arcgis.lcwc911.us/.well-known/acme-challenge/letsdebug-test (using initial IP 66.216.164.13)
@0ms: Dialing 66.216.164.13
@10000ms: Experienced error: context deadline exceeded
Yet from my location (Oregon, USA) I see with nmap
$ curl -Ii http://arcgis.lcwc911.us/.well-known/acme-challenge/sometestfile
HTTP/1.1 404 Not Found
Content-Length: 1245
Content-Type: text/html
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
X-Powered-By: ARR/3.0
Date: Wed, 15 May 2024 22:43:34 GMT
And yet here Permanent link to this check report several "Connection timed out" and some "Server error"; none connected.
Please read these: