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

Results for*.usd.express

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2023-01-18T08:17:12.408	2023-01-18T07:17:12	2023-04-18T07:17:11	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2023-01-18T08:17:12.408	2023-01-18T07:17:12	2023-04-18T07:17:11	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2023-01-18T08:17:12.217	2023-01-18T07:17:12	2023-04-18T07:17:11	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2023-01-18T08:17:12.217	2023-01-18T07:17:12	2023-04-18T07:17:11	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2022-10-20T04:40:36.399	2022-10-20T03:40:35	2023-01-18T03:40:34	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2022-10-20T04:40:36.399	2022-10-20T03:40:35	2023-01-18T03:40:34	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2022-10-20T04:40:35.975	2022-10-20T03:40:35	2023-01-18T03:40:34	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3
2022-10-20T04:40:35.975	2022-10-20T03:40:35	2023-01-18T03:40:34	usd.express	*.usd.express	C=US, O=Let's Encrypt, CN=R3