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

Results for*.campusnc.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-07-08T18:56:14.599	2019-07-08T17:56:13	2019-10-06T17:56:13	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-08T18:56:14.599	2019-07-08T17:56:13	2019-10-06T17:56:13	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-08T18:56:13.819	2019-07-08T17:56:13	2019-10-06T17:56:13	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-08T18:56:13.819	2019-07-08T17:56:13	2019-10-06T17:56:13	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-09T15:06:43.683	2019-05-09T14:06:43	2019-08-07T14:06:43	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-09T15:06:43.683	2019-05-09T14:06:43	2019-08-07T14:06:43	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-09T15:06:43.091	2019-05-09T14:06:43	2019-08-07T14:06:43	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-09T15:06:43.091	2019-05-09T14:06:43	2019-08-07T14:06:43	*.campusnc.com	*.campusnc.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3