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

Results forbackup.weightsolution.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-09-17T18:38:46.631	2022-09-17T17:38:46	2022-12-16T17:38:45	weightsolution.com	*.weightsolution.com	C=US, O=Let's Encrypt, CN=E1
2022-09-17T18:38:46.404	2022-09-17T17:38:46	2022-12-16T17:38:45	weightsolution.com	*.weightsolution.com	C=US, O=Let's Encrypt, CN=E1
2022-06-19T12:30:06.831	2022-06-19T11:30:06	2022-09-17T11:30:05	weightsolution.com	*.weightsolution.com	C=US, O=Let's Encrypt, CN=E1
2022-06-19T12:30:06.342	2022-06-19T11:30:06	2022-09-17T11:30:05	weightsolution.com	*.weightsolution.com	C=US, O=Let's Encrypt, CN=E1
2021-05-20T15:08:34.125	2021-05-20T14:08:33	2021-08-18T14:08:33	backup.weightsolution.com	backup.weightsolution.com	C=US, O=Let's Encrypt, CN=R3
2021-05-20T15:08:33.485	2021-05-20T14:08:33	2021-08-18T14:08:33	backup.weightsolution.com	backup.weightsolution.com	C=US, O=Let's Encrypt, CN=R3