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

Results for*.istio-test.deeploy.ml

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-11-26T09:15:36.666	2020-11-26T08:15:36	2021-02-24T08:15:36	*.istio-test.deeploy.ml	*.istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:15:36.666	2020-11-26T08:15:36	2021-02-24T08:15:36	*.istio-test.deeploy.ml	*.istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:15:36.511	2020-11-26T08:15:36	2021-02-24T08:15:36	*.istio-test.deeploy.ml	*.istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:15:36.511	2020-11-26T08:15:36	2021-02-24T08:15:36	*.istio-test.deeploy.ml	*.istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:14:22.506	2020-11-26T08:14:22	2021-02-24T08:14:22	istio-test.deeploy.ml	istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:14:22.506	2020-11-26T08:14:22	2021-02-24T08:14:22	istio-test.deeploy.ml	istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:14:22.22	2020-11-26T08:14:22	2021-02-24T08:14:22	istio-test.deeploy.ml	istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-11-26T09:14:22.22	2020-11-26T08:14:22	2021-02-24T08:14:22	istio-test.deeploy.ml	istio-test.deeploy.ml	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3