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

Results forwww.claimcloud.dev.tmcloud.io

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-05-12T09:59:07.971	2019-05-12T08:59:07	2019-08-10T08:59:07	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-12T09:59:07.695	2019-05-12T08:59:07	2019-08-10T08:59:07	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-10T11:52:21.614	2019-05-10T10:52:20	2019-08-08T10:52:20	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-10T11:52:20.982	2019-05-10T10:52:20	2019-08-08T10:52:20	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-01T17:58:21.42	2019-04-01T16:58:20	2019-06-30T16:58:20	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-04-01T17:58:20.4	2019-04-01T16:58:20	2019-06-30T16:58:20	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-01-30T07:59:17.192	2019-01-30T06:59:16	2019-04-30T06:59:16	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-01-30T07:59:16.619	2019-01-30T06:59:16	2019-04-30T06:59:16	www.claimcloud.dev.tmcloud.io	www.claimcloud.dev.tmcloud.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3