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

Results for*.02securewireless.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-02-27T13:04:48.231	2019-02-27T12:04:47	2019-05-28T12:04:47	tuscaloosacity.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-27T13:04:48.231	2019-02-27T12:04:47	2019-05-28T12:04:47	tuscaloosacity.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-27T13:04:47.251	2019-02-27T12:04:47	2019-05-28T12:04:47	tuscaloosacity.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-02-27T13:04:47.251	2019-02-27T12:04:47	2019-05-28T12:04:47	tuscaloosacity.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-12T00:48:01.355	2018-12-11T23:47:58	2019-03-11T23:47:58	02securewireless.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-12T00:48:01.355	2018-12-11T23:47:58	2019-03-11T23:47:58	02securewireless.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-12T00:47:58.575	2018-12-11T23:47:58	2019-03-11T23:47:58	02securewireless.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-12T00:47:58.575	2018-12-11T23:47:58	2019-03-11T23:47:58	02securewireless.com	*.02securewireless.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3