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

Results forimap4.ns1.parkingcrew.net

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-10-03T20:20:35.906	2025-10-03T19:22:05	2026-01-01T19:22:04	imap4.ns1.parkingcrew.net	imap4.ns1.parkingcrew.net	C=US, O=Let's Encrypt, CN=R13
2025-10-03T20:20:35.779	2025-10-03T19:22:05	2026-01-01T19:22:04	imap4.ns1.parkingcrew.net	imap4.ns1.parkingcrew.net	C=US, O=Let's Encrypt, CN=R13
2025-05-28T12:59:50.395	2025-05-28T12:01:19	2025-08-26T12:01:18	imap4.ns1.parkingcrew.net	imap4.ns1.parkingcrew.net	C=US, O=Let's Encrypt, CN=R11
2025-05-28T12:59:49.554	2025-05-28T12:01:19	2025-08-26T12:01:18	imap4.ns1.parkingcrew.net	imap4.ns1.parkingcrew.net	C=US, O=Let's Encrypt, CN=R11