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

Results fortest.goldarn.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-10-05T23:03:13.132	2022-10-05T22:03:12	2023-01-03T22:03:11	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2022-10-05T23:03:12.917	2022-10-05T22:03:12	2023-01-03T22:03:11	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2022-04-07T04:07:13.063	2022-04-07T03:07:12	2022-07-06T03:07:11	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2022-04-07T04:07:12.933	2022-04-07T03:07:12	2022-07-06T03:07:11	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2021-10-04T23:43:21.771	2021-10-04T22:43:21	2022-01-02T22:43:20	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2021-10-04T23:43:21.467	2021-10-04T22:43:21	2022-01-02T22:43:20	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2021-06-29T20:10:47.75	2021-06-29T19:10:46	2021-09-27T19:10:45	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3
2021-06-29T20:10:47.56	2021-06-29T19:10:46	2021-09-27T19:10:45	test.goldarn.com	test.goldarn.com	C=US, O=Let's Encrypt, CN=R3