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