Check Nameservers, IP Addresses, and MX Mail Exchange Records of any Domain Name.
DNS Checker Tool - Check Domain Name System (DNS) records for any website.
WhoisAPI - WhoisAPI is the premier provider of freshly parsed whois data for domain names and IP addresses...
DNSInspect - DNS is a free online service to check your domainโs servers for common DNS and mail errors and produces a report with explanations how to fix them.
DNSdumpster.com - Open source domain intelligence lookups for security recon
DNSQuerySniffer - DNSQuerySniffer is a system sniffer utility that demonstrates the DNS inquiries sent on your framework.
Bulk Whois API - Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, top notch support, and more.