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

Results foredutec.net.ni

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-03-19T04:33:57.889	2019-03-19T03:33:56	2019-06-17T03:33:56	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-03-19T04:33:57.034	2019-03-19T03:33:56	2019-06-17T03:33:56	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-29T01:05:54.172	2018-12-29T00:05:53	2019-03-29T00:05:53	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-12-29T01:05:53.434	2018-12-29T00:05:53	2019-03-29T00:05:53	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-30T02:02:43.127	2018-09-30T01:02:42	2018-12-29T01:02:42	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2018-09-30T02:02:42.473	2018-09-30T01:02:42	2018-12-29T01:02:42	educate.edutec.net.ni	educate.edutec.net.ni	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3