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

Results forauth.rubyengagementring.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-10-25T04:58:12.846	2025-10-25T03:59:42	2026-01-23T03:59:41	www.auth.rubyengagementring.com	www.auth.rubyengagementring.com	C=US, O=Let's Encrypt, CN=R12
2025-10-25T04:58:12.405	2025-10-25T03:59:42	2026-01-23T03:59:41	www.auth.rubyengagementring.com	www.auth.rubyengagementring.com	C=US, O=Let's Encrypt, CN=R12
2025-09-11T13:19:33.569	2025-09-11T12:21:03	2025-12-10T12:21:02	auth.rubyengagementring.com	auth.rubyengagementring.com	C=US, O=Let's Encrypt, CN=R12
2025-09-11T13:19:33.272	2025-09-11T12:21:03	2025-12-10T12:21:02	auth.rubyengagementring.com	auth.rubyengagementring.com	C=US, O=Let's Encrypt, CN=R12