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

Results forsync-organization.gatekeeper.codeshake.dev

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2019-09-02T12:50:59.307	2019-09-02T11:50:58	2019-12-01T11:50:58	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-09-02T12:50:58.634	2019-09-02T11:50:58	2019-12-01T11:50:58	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-05T06:20:54.865	2019-07-05T05:20:54	2019-10-03T05:20:54	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-07-05T06:20:54.622	2019-07-05T05:20:54	2019-10-03T05:20:54	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-06T23:53:01.327	2019-05-06T22:53:00	2019-08-04T22:53:00	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2019-05-06T23:53:00.066	2019-05-06T22:53:00	2019-08-04T22:53:00	sync-organization.gatekeeper.codeshake.dev	sync-organization.gatekeeper.codeshake.dev	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3