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

Results for*.miltechlab.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-12-19T17:07:04.346	2019-12-17T00:00:00	2020-12-17T12:00:00	miltechlab.com	*.miltechlab.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-19T17:07:04.346	2019-12-17T00:00:00	2020-12-17T12:00:00	miltechlab.com	*.miltechlab.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-17T08:45:53.974	2019-12-17T00:00:00	2020-12-17T12:00:00	miltechlab.com	*.miltechlab.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-12-17T08:45:53.974	2019-12-17T00:00:00	2020-12-17T12:00:00	miltechlab.com	*.miltechlab.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1