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

Results for*.lumpy.xyz

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-05-21T17:42:55.266	2020-05-21T00:00:00	2021-05-22T12:00:00	lumpy.xyz	*.lumpy.xyz	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-05-21T17:42:55.266	2020-05-21T00:00:00	2021-05-22T12:00:00	lumpy.xyz	*.lumpy.xyz	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2019-07-12T13:04:33.505	2019-07-12T12:04:32	2019-10-10T12:04:32	lumpy.xyz	*.lumpy.xyz	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-12T13:04:33.505	2019-07-12T12:04:32	2019-10-10T12:04:32	lumpy.xyz	*.lumpy.xyz	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-12T13:04:32.331	2019-07-12T12:04:32	2019-10-10T12:04:32	lumpy.xyz	*.lumpy.xyz	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-12T13:04:32.331	2019-07-12T12:04:32	2019-10-10T12:04:32	lumpy.xyz	*.lumpy.xyz	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3