It can be anything! An apex, subdomain, or even a URL.

Results for*.dns.bll-test.myorderbox.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-01-11T11:16:50.677	2022-01-11T10:16:50	2022-04-11T10:16:49	*.dns.bll-test.myorderbox.com	*.dns.bll-test.myorderbox.com	C=US, O=Let's Encrypt, CN=R3
2022-01-11T11:16:50.677	2022-01-11T10:16:50	2022-04-11T10:16:49	*.dns.bll-test.myorderbox.com	*.dns.bll-test.myorderbox.com	C=US, O=Let's Encrypt, CN=R3
2022-01-11T11:16:50.403	2022-01-11T10:16:50	2022-04-11T10:16:49	*.dns.bll-test.myorderbox.com	*.dns.bll-test.myorderbox.com	C=US, O=Let's Encrypt, CN=R3
2022-01-11T11:16:50.403	2022-01-11T10:16:50	2022-04-11T10:16:49	*.dns.bll-test.myorderbox.com	*.dns.bll-test.myorderbox.com	C=US, O=Let's Encrypt, CN=R3