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

Results for*.mail2.ptd.de

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-09-17T13:15:49.825	2024-09-17T12:17:19	2024-12-16T12:17:18	winpv.com	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R11
2024-09-17T13:15:49.825	2024-09-17T12:17:19	2024-12-16T12:17:18	winpv.com	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R11
2024-09-17T13:15:49.505	2024-09-17T12:17:19	2024-12-16T12:17:18	winpv.com	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R11
2024-09-17T13:15:49.505	2024-09-17T12:17:19	2024-12-16T12:17:18	winpv.com	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R11
2024-09-08T11:55:02.029	2024-09-08T10:56:31	2024-12-07T10:56:30	xionamsd.online	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R10
2024-09-08T11:55:02.029	2024-09-08T10:56:31	2024-12-07T10:56:30	xionamsd.online	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R10
2024-09-08T11:55:01.676	2024-09-08T10:56:31	2024-12-07T10:56:30	xionamsd.online	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R10
2024-09-08T11:55:01.676	2024-09-08T10:56:31	2024-12-07T10:56:30	xionamsd.online	*.mail2.ptd.de	C=US, O=Let's Encrypt, CN=R10