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

Results for*.xdtpd.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-03-14T00:51:15.434	2020-03-13T23:51:15	2020-06-11T23:51:15	xdtpd.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-14T00:51:15.434	2020-03-13T23:51:15	2020-06-11T23:51:15	xdtpd.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-14T00:51:15.253	2020-03-13T23:51:15	2020-06-11T23:51:15	xdtpd.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-03-14T00:51:15.253	2020-03-13T23:51:15	2020-06-11T23:51:15	xdtpd.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-20T00:42:15.677	2019-12-19T23:42:15	2020-03-18T23:42:15	milarty.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-20T00:42:15.677	2019-12-19T23:42:15	2020-03-18T23:42:15	milarty.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-20T00:42:15.548	2019-12-19T23:42:15	2020-03-18T23:42:15	milarty.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-12-20T00:42:15.548	2019-12-19T23:42:15	2020-03-18T23:42:15	milarty.com	*.xdtpd.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3