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

Results forhostmaster.hostmaster.eval.co

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-10-01T21:48:53.083	2025-10-01T20:50:22	2025-12-30T20:50:21	hostmaster.hostmaster.eval.co	hostmaster.hostmaster.eval.co	C=US, O=Let's Encrypt, CN=R13
2025-10-01T21:48:52.959	2025-10-01T20:50:22	2025-12-30T20:50:21	hostmaster.hostmaster.eval.co	hostmaster.hostmaster.eval.co	C=US, O=Let's Encrypt, CN=R13
2025-09-11T08:14:16.434	2025-09-11T07:15:46	2025-12-10T07:15:45	hostmaster.hostmaster.eval.co	hostmaster.hostmaster.eval.co	C=US, O=Let's Encrypt, CN=R12
2025-09-11T08:14:16.17	2025-09-11T07:15:46	2025-12-10T07:15:45	hostmaster.hostmaster.eval.co	hostmaster.hostmaster.eval.co	C=US, O=Let's Encrypt, CN=R12