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

Results for*.list.inst.to

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-04-19T17:19:04.788	2023-04-19T00:00:00	2024-05-17T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, CN=Amazon RSA 2048 M01
2023-04-19T17:19:04.788	2023-04-19T00:00:00	2024-05-17T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, CN=Amazon RSA 2048 M01
2022-03-13T03:29:36.881	2022-03-13T00:00:00	2023-04-11T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2022-03-13T03:29:36.881	2022-03-13T00:00:00	2023-04-11T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-04-12T16:40:41.793	2021-04-12T00:00:00	2022-05-11T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-04-12T16:40:41.793	2021-04-12T00:00:00	2022-05-11T23:59:59	*.list.inst.to	*.list.inst.to	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon