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

Results forexample.glasssteagall.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-09-05T19:39:04.847	2025-09-05T18:40:32	2025-12-04T18:40:31	example.glasssteagall.com	example.glasssteagall.com	C=US, O=Let's Encrypt, CN=R12
2025-09-05T19:39:02.753	2025-09-05T18:40:32	2025-12-04T18:40:31	example.glasssteagall.com	example.glasssteagall.com	C=US, O=Let's Encrypt, CN=R12
2023-01-17T19:19:48.501	2023-01-17T18:19:47	2023-04-17T18:19:46	glasssteagall.com	*.glasssteagall.com	C=US, O=Let's Encrypt, CN=R3
2023-01-17T19:19:47.818	2023-01-17T18:19:47	2023-04-17T18:19:46	glasssteagall.com	*.glasssteagall.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T17:19:49.458	2022-11-18T16:19:48	2023-02-16T16:19:47	glasssteagall.com	*.glasssteagall.com	C=US, O=Let's Encrypt, CN=R3
2022-11-18T17:19:49.032	2022-11-18T16:19:48	2023-02-16T16:19:47	glasssteagall.com	*.glasssteagall.com	C=US, O=Let's Encrypt, CN=R3