Update README.md

Author: edoardottt

README.md

@@ -314,6 +314,7 @@ A curated list of awesome search engines useful during Penetration testing, Vuln
 - [Validin](https://app.validin.com/) - Massive collection of DNS records with free DNS history search
 - [dnslookup.pro](https://dnslookup.pro/) - Advanced DNS Record Analysis & Troubleshooting
 - [ViewDNS.info](https://viewdns.info/) - A web-based toolkit offering over 25 DNS and network intelligence tools for reconnaissance, diagnostics, and research
+- [dnsaudit.io](https://dnsaudit.io/) - Find DNS misconfigurations, risks and security gaps
 
 ### Certificates