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

Results for*.ttdns4.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-07-15T06:18:13.307	2025-07-15T00:00:00	2026-08-15T23:59:59	*.ttdns4.com	*.ttdns4.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL TLS ECC CA G1
2025-07-15T06:18:13.307	2025-07-15T00:00:00	2026-08-15T23:59:59	*.ttdns4.com	*.ttdns4.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL TLS ECC CA G1
2025-07-15T06:15:15.524	2025-07-15T00:00:00	2026-07-14T23:59:59	*.ttdns4.com	*.ttdns4.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL TLS RSA CA G1
2025-07-15T06:15:15.524	2025-07-15T00:00:00	2026-07-14T23:59:59	*.ttdns4.com	*.ttdns4.com	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL TLS RSA CA G1