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

Results forwww.projects.nurd.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-06-02T11:48:35.777	2020-06-02T00:00:00	2022-06-02T23:59:59	projects.nurd.com	www.projects.nurd.com	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Organization Validation Secure Server CA
2020-06-02T11:48:34.493	2020-06-02T00:00:00	2022-06-02T23:59:59	projects.nurd.com	www.projects.nurd.com	C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Organization Validation Secure Server CA
2018-09-25T08:03:09.378	2018-09-25T00:00:00	2020-09-24T23:59:59	projects.nurd.com	www.projects.nurd.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA
2018-09-25T08:02:49.219	2018-09-25T00:00:00	2020-09-24T23:59:59	projects.nurd.com	www.projects.nurd.com	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Organization Validation Secure Server CA