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

Results fordan.bd.to

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-06-09T03:40:37.913	2022-06-09T02:40:37	2022-09-07T02:40:36	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2022-06-09T03:40:37.592	2022-06-09T02:40:37	2022-09-07T02:40:36	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2022-03-11T01:10:38.75	2022-03-11T00:10:38	2022-06-09T00:10:37	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2022-03-11T01:10:38.576	2022-03-11T00:10:38	2022-06-09T00:10:37	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-12-10T07:05:17.514	2021-12-10T06:05:17	2022-03-10T06:05:16	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-12-10T07:05:17.301	2021-12-10T06:05:17	2022-03-10T06:05:16	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-09-11T12:24:35.808	2021-09-11T11:24:34	2021-12-10T11:24:33	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-09-11T12:24:35.253	2021-09-11T11:24:34	2021-12-10T11:24:33	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-06-14T20:50:26.637	2021-06-14T19:50:25	2021-09-12T19:50:24	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3
2021-06-14T20:50:26.231	2021-06-14T19:50:25	2021-09-12T19:50:24	dan.bd.to	dan.bd.to	C=US, O=Let's Encrypt, CN=R3