If you're using a resolver which supports DNSSEC, and you're using Firefox with the DNSSEC-Validator addon from https://www.dnssec-validator.cz/ https://www.dns

If you're using a resolver which supports DNSSEC, and you're using Firefox with the DNSSEC-Validator addon from https://www.dnssec-validator.cz/ https://www.dnssec-validator.cz/ (which supports DANE) and you visit https://grepular.com/ https://grepular.com/, you will see a nice little green icon in the address bar to show you that DNSSEC was used, and another green icon to show you that the SSL cert was validated using DANE.