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

Results for*.nuvlog.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-06-02T18:31:51.997	2020-05-31T00:00:00	2021-06-01T12:00:00	nuvlog.com	*.nuvlog.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-06-02T18:31:51.997	2020-05-31T00:00:00	2021-06-01T12:00:00	nuvlog.com	*.nuvlog.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-05-31T22:32:29.05	2020-05-31T00:00:00	2021-06-01T12:00:00	nuvlog.com	*.nuvlog.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-05-31T22:32:29.05	2020-05-31T00:00:00	2021-06-01T12:00:00	nuvlog.com	*.nuvlog.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1