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

Results forapi-develop.merchscale.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2021-05-14T06:12:51.404	2021-05-14T05:12:51	2021-08-12T05:12:51	api-develop.merchscale.com	api-develop.merchscale.com	C=US, O=Let's Encrypt, CN=R3
2021-05-14T06:12:51.283	2021-05-14T05:12:51	2021-08-12T05:12:51	api-develop.merchscale.com	api-develop.merchscale.com	C=US, O=Let's Encrypt, CN=R3
2021-05-14T06:11:25.417	2021-05-14T05:11:25	2021-08-12T05:11:25	api-develop.merchscale.com	api-develop.merchscale.com	C=US, O=Let's Encrypt, CN=R3
2021-05-14T06:11:25.203	2021-05-14T05:11:25	2021-08-12T05:11:25	api-develop.merchscale.com	api-develop.merchscale.com	C=US, O=Let's Encrypt, CN=R3