It can be anything! An apex, subdomain, or even a URL.
Results for*.secure.gravatar.com.slack.tslack.proxyaws.myshn.eu
www.*.secure.gravatar.com.slack.tslack.proxyaws.myshn.eusecure.gravatar.com.slack.tslack.proxyaws.myshn.eugravatar.com.slack.tslack.proxyaws.myshn.eucom.slack.tslack.proxyaws.myshn.euslack.tslack.proxyaws.myshn.eutslack.proxyaws.myshn.euproxyaws.myshn.eumyshn.eueu