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

Results for*.defdev.de

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-12-31T07:26:45.04	2021-10-03T00:00:00	2022-10-03T23:59:59	defdev.de	*.defdev.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-12-31T07:26:45.04	2021-10-03T00:00:00	2022-10-03T23:59:59	defdev.de	*.defdev.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-10-03T22:33:13.234	2021-10-03T00:00:00	2022-10-03T23:59:59	defdev.de	*.defdev.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-10-03T22:33:13.234	2021-10-03T00:00:00	2022-10-03T23:59:59	defdev.de	*.defdev.de	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1