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

Results forthis.wat.app

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2025-08-22T04:06:09.173	2025-08-22T00:00:00	2026-08-21T23:59:59	this.wat.app	this.wat.app	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2
2025-08-22T04:05:55.779	2025-08-22T00:00:00	2026-08-21T23:59:59	this.wat.app	this.wat.app	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2
2025-08-21T18:27:48.493	2025-08-21T00:00:00	2026-08-20T23:59:59	with.this.wat.app	with.this.wat.app	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2
2025-08-21T18:27:37.338	2025-08-21T00:00:00	2026-08-20T23:59:59	with.this.wat.app	with.this.wat.app	C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Encryption Everywhere DV TLS CA - G2