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

Results forjoin.getorda.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-02-01T16:23:12.452	2022-02-01T15:23:11	2022-05-02T15:23:10	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2022-02-01T16:23:11.832	2022-02-01T15:23:11	2022-05-02T15:23:10	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-11-25T16:23:51.181	2021-11-25T15:23:50	2022-02-23T15:23:49	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-11-25T16:23:50.916	2021-11-25T15:23:50	2022-02-23T15:23:49	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-09-18T16:26:23.559	2021-09-18T15:26:22	2021-12-17T15:26:21	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-09-18T16:26:22.685	2021-09-18T15:26:22	2021-12-17T15:26:21	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-07-12T16:16:49.782	2021-07-12T15:16:49	2021-10-10T15:16:48	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3
2021-07-12T16:16:49.637	2021-07-12T15:16:49	2021-10-10T15:16:48	join.getorda.com	join.getorda.com	C=US, O=Let's Encrypt, CN=R3