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

Results forwire.attractsoft.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-11-10T04:35:13.221	2020-11-10T03:35:12	2021-02-08T03:35:12	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-10T04:35:12.996	2020-11-10T03:35:12	2021-02-08T03:35:12	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-18T09:22:14.666	2020-08-18T08:22:13	2020-11-16T08:22:13	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-08-18T09:22:14.414	2020-08-18T08:22:13	2020-11-16T08:22:13	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-07-30T12:20:32.832	2020-07-30T11:20:32	2020-10-28T11:20:32	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-07-30T12:20:32.599	2020-07-30T11:20:32	2020-10-28T11:20:32	wire.attractsoft.com	wire.attractsoft.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3