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

Results forwww.api.mobileoffize.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-01-15T17:58:30.994	2018-11-19T08:00:38	2020-01-03T20:33:02	api.mobileoffize.com	www.api.mobileoffize.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2
2018-11-19T08:00:39.544	2018-11-19T08:00:38	2020-01-03T20:33:02	api.mobileoffize.com	www.api.mobileoffize.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2
2018-01-09T14:47:16.364	2018-01-03T20:33:01	2019-01-03T20:33:01	api.mobileoffize.com	www.api.mobileoffize.com	C=US, ST=Arizona, L=Scottsdale, O="GoDaddy.com, Inc.", OU=http://certs.godaddy.com/repository/, CN=Go Daddy Secure Certificate Authority - G2