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

Results for*.adamarkin.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-17T20:06:12.886	2023-01-17T19:06:12	2023-04-17T19:06:11	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:12.886	2023-01-17T19:06:12	2023-04-17T19:06:11	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:12.296	2023-01-17T19:06:12	2023-04-17T19:06:11	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T20:06:12.296	2023-01-17T19:06:12	2023-04-17T19:06:11	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:05:57.515	2022-11-18T17:05:56	2023-02-16T17:05:55	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:05:57.515	2022-11-18T17:05:56	2023-02-16T17:05:55	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:05:56.861	2022-11-18T17:05:56	2023-02-16T17:05:55	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T18:05:56.861	2022-11-18T17:05:56	2023-02-16T17:05:55	adamarkin.com	*.adamarkin.com	C=US, O=Let's Encrypt, CN=R3