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

Results for*.superculos.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-05-10T03:05:57.603	2019-05-10T02:05:56	2019-08-08T02:05:56	superculos.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-10T03:05:57.603	2019-05-10T02:05:56	2019-08-08T02:05:56	superculos.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-10T03:05:57.026	2019-05-10T02:05:56	2019-08-08T02:05:56	superculos.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-10T03:05:57.026	2019-05-10T02:05:56	2019-08-08T02:05:56	superculos.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-13T01:46:00.268	2019-02-13T00:45:59	2019-05-14T00:45:59	millenniumduelistkingdom.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-13T01:46:00.268	2019-02-13T00:45:59	2019-05-14T00:45:59	millenniumduelistkingdom.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-13T01:45:59.396	2019-02-13T00:45:59	2019-05-14T00:45:59	millenniumduelistkingdom.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-13T01:45:59.396	2019-02-13T00:45:59	2019-05-14T00:45:59	millenniumduelistkingdom.com	*.superculos.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3