It can be anything! An apex, subdomain, or even a URL.
Results forenterprise.slack.com.slack.test-slack.mcafee.myshn.eu
www.enterprise.slack.com.slack.test-slack.mcafee.myshn.euslack.com.slack.test-slack.mcafee.myshn.eucom.slack.test-slack.mcafee.myshn.euslack.test-slack.mcafee.myshn.eutest-slack.mcafee.myshn.eumcafee.myshn.eumyshn.eueu