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

Results forwordpress.imperialinternet.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-05-18T20:14:25.035	2024-05-18T19:14:24	2024-08-16T19:14:23	wordpress.imperialinternet.com	wordpress.imperialinternet.com	C=US, O=Let's Encrypt, CN=R3
2024-05-18T20:14:24.695	2024-05-18T19:14:24	2024-08-16T19:14:23	wordpress.imperialinternet.com	wordpress.imperialinternet.com	C=US, O=Let's Encrypt, CN=R3
2024-03-18T20:38:05.041	2024-03-18T19:38:04	2024-06-16T19:38:03	wordpress.imperialinternet.com	wordpress.imperialinternet.com	C=US, O=Let's Encrypt, CN=R3
2024-03-18T20:38:04.311	2024-03-18T19:38:04	2024-06-16T19:38:03	wordpress.imperialinternet.com	wordpress.imperialinternet.com	C=US, O=Let's Encrypt, CN=R3