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

Results for*.sparro.ca

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-03-09T03:04:05.181	2021-03-09T00:00:00	2022-04-07T23:59:59	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2021-03-09T03:04:05.181	2021-03-09T00:00:00	2022-04-07T23:59:59	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-04-07T01:03:28.51	2020-04-07T00:00:00	2021-05-07T12:00:00	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-04-07T01:03:28.51	2020-04-07T00:00:00	2021-05-07T12:00:00	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2019-05-05T04:05:27.187	2019-05-05T00:00:00	2020-06-05T12:00:00	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2019-05-05T04:05:27.187	2019-05-05T00:00:00	2020-06-05T12:00:00	*.sparro.ca	*.sparro.ca	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon