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

Results fornet.amplifyinglearning.org

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-02-19T19:49:48.206	2023-02-19T18:49:47	2023-05-20T18:49:46	meopet.net.amplifyinglearning.org	meopet.net.amplifyinglearning.org	C=US, O=Let's Encrypt, CN=R3
2023-02-19T19:49:47.719	2023-02-19T18:49:47	2023-05-20T18:49:46	meopet.net.amplifyinglearning.org	meopet.net.amplifyinglearning.org	C=US, O=Let's Encrypt, CN=R3
2022-06-17T08:47:23.836	2022-06-17T07:47:23	2022-09-15T07:47:22	virtualvbschurch.net.amplifyinglearning.org	virtualvbschurch.net.amplifyinglearning.org	C=US, O=Let's Encrypt, CN=R3
2022-06-17T08:47:23.652	2022-06-17T07:47:23	2022-09-15T07:47:22	virtualvbschurch.net.amplifyinglearning.org	virtualvbschurch.net.amplifyinglearning.org	C=US, O=Let's Encrypt, CN=R3