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

Results for*.climb.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2018-09-29T00:11:18.213	2018-09-28T23:11:17	2018-12-27T23:11:17	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-29T00:11:18.213	2018-09-28T23:11:17	2018-12-27T23:11:17	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-29T00:11:17.523	2018-09-28T23:11:17	2018-12-27T23:11:17	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-29T00:11:17.523	2018-09-28T23:11:17	2018-12-27T23:11:17	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-28T23:10:46.23	2018-09-28T22:10:45	2018-12-27T22:10:45	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-28T23:10:46.23	2018-09-28T22:10:45	2018-12-27T22:10:45	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-28T23:10:45.694	2018-09-28T22:10:45	2018-12-27T22:10:45	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-28T23:10:45.694	2018-09-28T22:10:45	2018-12-27T22:10:45	*.climb.app	*.climb.app	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3