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

Results fortemp.mudtrac.app.lc.dev

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-24T18:02:11.656	2023-01-24T17:02:10	2023-04-24T17:02:09	api.temp.mudtrac.app.lc.dev	api.temp.mudtrac.app.lc.dev	C=US, O=Let's Encrypt, CN=R3
2023-01-24T18:02:11.188	2023-01-24T17:02:10	2023-04-24T17:02:09	api.temp.mudtrac.app.lc.dev	api.temp.mudtrac.app.lc.dev	C=US, O=Let's Encrypt, CN=R3
2023-01-24T18:02:09.172	2023-01-24T17:02:08	2023-04-24T17:02:07	portal.temp.mudtrac.app.lc.dev	portal.temp.mudtrac.app.lc.dev	C=US, O=Let's Encrypt, CN=R3
2023-01-24T18:02:08.842	2023-01-24T17:02:08	2023-04-24T17:02:07	portal.temp.mudtrac.app.lc.dev	portal.temp.mudtrac.app.lc.dev	C=US, O=Let's Encrypt, CN=R3