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

Results for*.test.objecta.io

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-11-09T06:44:23.964	2019-11-09T05:44:23	2020-02-07T05:44:23	*.dev.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-11-09T06:44:23.964	2019-11-09T05:44:23	2020-02-07T05:44:23	*.dev.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-11-09T06:44:23.754	2019-11-09T05:44:23	2020-02-07T05:44:23	*.dev.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-11-09T06:44:23.754	2019-11-09T05:44:23	2020-02-07T05:44:23	*.dev.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-12T09:27:51.277	2019-05-12T08:27:50	2019-08-10T08:27:50	*.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-12T09:27:51.277	2019-05-12T08:27:50	2019-08-10T08:27:50	*.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-12T09:27:50.785	2019-05-12T08:27:50	2019-08-10T08:27:50	*.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-12T09:27:50.785	2019-05-12T08:27:50	2019-08-10T08:27:50	*.objecta.io	*.test.objecta.io	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3