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

Results forin.tutorof.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-11-03T05:48:48.45	2023-11-03T04:48:47	2024-02-01T04:48:46	craftsmagazine.in.tutorof.com	craftsmagazine.in.tutorof.com	C=US, O=Let's Encrypt, CN=R3
2023-11-03T05:48:48.094	2023-11-03T04:48:47	2024-02-01T04:48:46	craftsmagazine.in.tutorof.com	craftsmagazine.in.tutorof.com	C=US, O=Let's Encrypt, CN=R3
2022-04-25T03:14:24.863	2022-04-25T02:14:24	2022-07-24T02:14:23	singleover40.com	techconnect.in.tutorof.com	C=US, O=Let's Encrypt, CN=R3
2022-04-25T03:14:24.678	2022-04-25T02:14:24	2022-07-24T02:14:23	singleover40.com	techconnect.in.tutorof.com	C=US, O=Let's Encrypt, CN=R3