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

Results for*.ba.virtualweb.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-10-12T07:33:14.16	2021-10-12T06:33:13	2022-01-10T06:33:12	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-10-12T07:33:14.16	2021-10-12T06:33:13	2022-01-10T06:33:12	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-10-12T07:33:13.818	2021-10-12T06:33:13	2022-01-10T06:33:12	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-10-12T07:33:13.818	2021-10-12T06:33:13	2022-01-10T06:33:12	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-08-13T00:13:52.835	2021-08-12T23:13:52	2021-11-10T23:13:50	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-08-13T00:13:52.835	2021-08-12T23:13:52	2021-11-10T23:13:50	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-08-13T00:13:52.582	2021-08-12T23:13:52	2021-11-10T23:13:50	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3
2021-08-13T00:13:52.582	2021-08-12T23:13:52	2021-11-10T23:13:50	virtualweb.app	*.ba.virtualweb.app	C=US, O=Let's Encrypt, CN=R3