https://easydmarc.com/tools/ – Domain Scanner is a complete tool designed to help you identify all possible issues with your domain. Scan a domain to get it analyzed for possible issues with DMARC, SPF, DKIM and BIMI records. Use DNS Lookup tool to find DNS records of your domain. You can lookup records using different DNS servers, check IP and domain reputation in blacklists.
https://lookup.icann.org/en – The ICANN registration data lookup tool uses the Registration Data Access Protocol (RDAP) gives you the ability to look up the current registration data for domain names and Internet number resources. RDAP has several advantages over the WHOIS protocol, including more secure access to data, a standardized and user-friendly format, support for internationalization, and the ability to provide differentiated access to registration data.