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

Results forwww.admin-api.dev.mana.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-02-03T16:47:26.557	2021-02-03T15:47:26	2021-05-04T15:47:26	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=R3
2021-02-03T16:47:26.338	2021-02-03T15:47:26	2021-05-04T15:47:26	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=R3
2020-12-05T13:38:15.833	2020-12-05T12:38:15	2021-03-05T12:38:15	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=R3
2020-12-05T13:38:15.617	2020-12-05T12:38:15	2021-03-05T12:38:15	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=R3
2020-10-05T18:12:11.104	2020-10-05T17:12:10	2021-01-03T17:12:10	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-10-05T18:12:10.595	2020-10-05T17:12:10	2021-01-03T17:12:10	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-05T16:48:48.464	2020-08-05T15:48:48	2020-11-03T15:48:48	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-05T16:48:48.31	2020-08-05T15:48:48	2020-11-03T15:48:48	admin-api.dev.mana.app	admin-api.dev.mana.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3