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

Results forepg.local.r01.dev

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-12-14T10:13:50.382	2021-12-14T09:13:49	2022-03-14T09:13:48	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-12-14T10:13:49.759	2021-12-14T09:13:49	2022-03-14T09:13:48	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-09-13T06:09:43.138	2021-09-13T05:09:42	2021-12-12T05:09:41	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-09-13T06:09:42.608	2021-09-13T05:09:42	2021-12-12T05:09:41	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-07-15T07:07:54.336	2021-07-15T06:07:53	2021-10-13T06:07:52	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-07-15T07:07:53.858	2021-07-15T06:07:53	2021-10-13T06:07:52	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-05-16T08:06:45.1	2021-05-16T07:06:44	2021-08-14T07:06:44	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3
2021-05-16T08:06:44.726	2021-05-16T07:06:44	2021-08-14T07:06:44	epg.local.r01.dev	epg.local.r01.dev	C=US, O=Let's Encrypt, CN=R3