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

Results forgit.git.blog.unwindexplore.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-07-02T19:27:12.029	2022-07-02T18:27:11	2022-09-30T18:27:10	git.git.git.blog.unwindexplore.com	git.git.git.blog.unwindexplore.com	C=US, O=Let's Encrypt, CN=R3
2022-07-02T19:27:11.635	2022-07-02T18:27:11	2022-09-30T18:27:10	git.git.git.blog.unwindexplore.com	git.git.git.blog.unwindexplore.com	C=US, O=Let's Encrypt, CN=R3
2022-07-02T19:25:40.972	2022-07-02T18:25:39	2022-09-30T18:25:38	git.git.blog.unwindexplore.com	git.git.blog.unwindexplore.com	C=US, O=Let's Encrypt, CN=R3
2022-07-02T19:25:40.135	2022-07-02T18:25:39	2022-09-30T18:25:38	git.git.blog.unwindexplore.com	git.git.blog.unwindexplore.com	C=US, O=Let's Encrypt, CN=R3