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

Results for*.gammapiu.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-09-17T15:59:05.937	2019-09-17T14:59:05	2019-12-16T14:59:05	topboyrio.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-17T15:59:05.937	2019-09-17T14:59:05	2019-12-16T14:59:05	topboyrio.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-17T15:59:05.757	2019-09-17T14:59:05	2019-12-16T14:59:05	topboyrio.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-17T15:59:05.757	2019-09-17T14:59:05	2019-12-16T14:59:05	topboyrio.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-03T06:28:31.496	2019-05-03T05:28:30	2019-08-01T05:28:30	gammapiu.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-03T06:28:31.496	2019-05-03T05:28:30	2019-08-01T05:28:30	gammapiu.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-03T06:28:30.524	2019-05-03T05:28:30	2019-08-01T05:28:30	gammapiu.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-03T06:28:30.524	2019-05-03T05:28:30	2019-08-01T05:28:30	gammapiu.com	*.gammapiu.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3