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

Results forwww.devreglantern.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-02-15T03:30:23.905	2021-02-15T02:30:23	2021-05-16T02:30:23	www.devreglantern.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=R3
2021-02-15T03:30:23.775	2021-02-15T02:30:23	2021-05-16T02:30:23	www.devreglantern.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=R3
2019-01-12T18:13:47.527	2019-01-12T17:13:46	2019-04-12T17:13:46	water-and-power.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-01-12T18:13:46.791	2019-01-12T17:13:46	2019-04-12T17:13:46	water-and-power.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-01-12T16:34:52.334	2019-01-12T15:34:51	2019-04-12T15:34:51	www.devreglantern.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-01-12T16:34:51.903	2019-01-12T15:34:51	2019-04-12T15:34:51	www.devreglantern.com	www.devreglantern.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3