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

Results forcom.constable.vc

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-02-23T21:16:29.825	2023-02-23T20:16:29	2023-05-24T20:16:28	showlance.com.constable.vc	showlance.com.constable.vc	C=US, O=Let's Encrypt, CN=R3
2023-02-23T21:16:29.707	2023-02-23T20:16:29	2023-05-24T20:16:28	showlance.com.constable.vc	showlance.com.constable.vc	C=US, O=Let's Encrypt, CN=R3
2023-01-10T12:04:39.466	2023-01-10T11:04:38	2023-04-10T11:04:37	httpstream.com.constable.vc	httpstream.com.constable.vc	C=US, O=Let's Encrypt, CN=R3
2023-01-10T12:04:39.1	2023-01-10T11:04:38	2023-04-10T11:04:37	httpstream.com.constable.vc	httpstream.com.constable.vc	C=US, O=Let's Encrypt, CN=R3