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

Results forredis.jennifer.localhost.render.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-12-05T19:57:44.774	2022-12-05T18:57:44	2023-03-05T18:57:43	redis.localhost.render.com	redis.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3
2022-12-05T19:57:44.557	2022-12-05T18:57:44	2023-03-05T18:57:43	redis.localhost.render.com	redis.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3
2022-07-13T00:10:58.029	2022-07-12T23:10:57	2022-10-10T23:10:56	redis.localhost.render.com	redis.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3
2022-07-13T00:10:57.793	2022-07-12T23:10:57	2022-10-10T23:10:56	redis.localhost.render.com	redis.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3
2022-07-13T00:08:34.96	2022-07-12T23:08:34	2022-10-10T23:08:33	*.localhost.render.com	*.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3
2022-07-13T00:08:34.714	2022-07-12T23:08:34	2022-10-10T23:08:33	*.localhost.render.com	*.jennifer.localhost.render.com	C=US, O=Let's Encrypt, CN=R3