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

Results forwebdisk.dfwwrecker.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-11-24T08:14:05.402	2020-11-19T00:00:00	2021-11-19T23:59:59	dfwwrecker.com	*.dfwwrecker.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-11-19T21:17:46.911	2020-11-19T00:00:00	2021-11-19T23:59:59	dfwwrecker.com	*.dfwwrecker.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-02-15T22:31:40.461	2020-02-15T00:00:00	2020-05-15T23:59:59	dfwwrecker.com	webdisk.dfwwrecker.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2020-02-15T22:31:27.116	2020-02-15T00:00:00	2020-05-15T23:59:59	dfwwrecker.com	webdisk.dfwwrecker.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-12-07T01:04:29.047	2019-12-07T00:00:00	2020-03-06T23:59:59	dfwwrecker.com	webdisk.dfwwrecker.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"
2019-12-07T01:04:14.613	2019-12-07T00:00:00	2020-03-06T23:59:59	dfwwrecker.com	webdisk.dfwwrecker.com	C=US, ST=TX, L=Houston, O="cPanel, Inc.", CN="cPanel, Inc. Certification Authority"