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

Results for*.smtp2.avanan.net

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-07-19T13:25:25.301	2023-07-19T12:25:25	2023-10-17T12:25:24	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:25:25.301	2023-07-19T12:25:25	2023-10-17T12:25:24	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:25:25.116	2023-07-19T12:25:25	2023-10-17T12:25:24	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:25:25.116	2023-07-19T12:25:25	2023-10-17T12:25:24	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:20:39.195	2023-07-19T12:20:39	2023-10-17T12:20:38	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:20:39.195	2023-07-19T12:20:39	2023-10-17T12:20:38	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:20:39.101	2023-07-19T12:20:39	2023-10-17T12:20:38	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3
2023-07-19T13:20:39.101	2023-07-19T12:20:39	2023-10-17T12:20:38	*.smtp2.avanan.net	*.smtp2.avanan.net	C=US, O=Let's Encrypt, CN=R3