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

Results for*.markd.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-05-05T18:32:29.779	2020-05-05T00:00:00	2021-06-05T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-05-05T18:32:29.779	2020-05-05T00:00:00	2021-06-05T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-03-04T09:23:41.551	2020-02-27T00:00:00	2021-03-27T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-03-04T09:23:41.551	2020-02-27T00:00:00	2021-03-27T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-02-27T10:19:49.245	2020-02-27T00:00:00	2021-03-27T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-02-27T10:19:49.245	2020-02-27T00:00:00	2021-03-27T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-02-25T16:12:51.1	2020-02-25T00:00:00	2021-03-25T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon
2020-02-25T16:12:51.1	2020-02-25T00:00:00	2021-03-25T12:00:00	*.markd.app	*.markd.app	C=US, O=Amazon, OU=Server CA 1B, CN=Amazon