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

Results forwww.buffer.g7cloud.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-11-07T02:45:41.438	2020-11-07T00:00:00	2021-11-07T23:59:59	buffer.g7cloud.com	www.buffer.g7cloud.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2020-11-07T02:45:40.841	2020-11-07T00:00:00	2021-11-07T23:59:59	buffer.g7cloud.com	www.buffer.g7cloud.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-12-02T16:43:17.747	2019-12-02T00:00:00	2020-12-01T23:59:59	buffer.g7cloud.com	www.buffer.g7cloud.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-12-02T16:43:02.98	2019-12-02T00:00:00	2020-12-01T23:59:59	buffer.g7cloud.com	www.buffer.g7cloud.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"