Http:// blocked but not www

I have a custom block list I'm using. One of the URLs on my list is amd.com
If I browse http://amd.com I get the pihole Website blocked page. If I enter www.amd.com it loads the page.
When I query the log, it shows both blocked (exact) and Ok.
My custom list it made up of a txt file with just the urls (no https:// or www.)
If i query the adlist I get
::: /etc/pihole/list.25.s3-us-west-2.amazonaws.com.domains (1 results)
amd.com
and
::: /etc/pihole/list.preEventHorizon (1 results)
amd.com
I did a full uninstall of Pihole then reinstalled and my only modification was the custom blocklists.
I'm still getting the same results following a fresh install.
Any help would be most appreciated!

DNS considers www.amd.com and amd.com to be two separate addresses. Since they could be on two different machines, much like orange.amd.com and purple.amd.com. If you want to block amd.com and every subdomain of them, so basically *.amd.com then you would need to add a blacklist wildcard entry for that top domain.

The custom list should just have domains only, not full URL's as we don't parse anything past the domain itself. We do not handle any http/https traffic or proxy as a blocking strategy.