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

Results for*.catbook.org

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-04-28T22:42:55.494	2021-10-23T00:00:00	2022-10-23T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2022-04-28T22:42:55.494	2021-10-23T00:00:00	2022-10-23T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-10-23T16:42:29.042	2021-10-23T00:00:00	2022-10-23T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2021-10-23T16:42:29.042	2021-10-23T00:00:00	2022-10-23T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-11-10T14:46:29.698	2020-11-04T00:00:00	2021-11-04T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-11-10T14:46:29.698	2020-11-04T00:00:00	2021-11-04T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-11-04T14:46:15.758	2020-11-04T00:00:00	2021-11-04T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1
2020-11-04T14:46:15.758	2020-11-04T00:00:00	2021-11-04T23:59:59	catbook.org	*.catbook.org	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G1