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Domain Name Monitoring: DNS, IP and Security

Advanced Tools for IT Professionals

viewdns.info - Exhaustive information tool for DNS, IPs, whois, etc.

Digwebinterface.com - DNS server queries, IPs, and other useful info

Iplocation.net/tools - Tools related to IP addresses, DNS, and other technical information

Centralized Zone Data Service (CZDS): platform operated by ICANN that provides access to the zone files of many top-level domains (TLDs).

Authoritative DNS Servers

BIND (Berkeley Internet Name Domain) - Maintained by the Internet Systems Consortium (ISC), BIND is the oldest and most widely used authoritative DNS server software. It is highly flexible, powerful, and often used by both enterprises and registries worldwide.

NSD (Name Server Daemon) - Developed by NLnet Labs, NSD is a lightweight and secure authoritative-only DNS server. It is favored by country-code registries (ccTLDs) and large DNS operators that prioritize simplicity, performance, and security.

Knot DNS - Developed by CZ.NIC (the Czech national domain registry), Knot DNS is a modern authoritative DNS server designed for high performance and scalability. It is increasingly used by registries and organizations managing large DNS infrastructures.

PowerDNS Authoritative Server - Originally developed in the Netherlands, PowerDNS is now maintained by Open-Xchange. It is a versatile authoritative DNS server, often used by service providers and enterprises, offering strong database integration and DNSSEC support

Security Testing

Have I been pwned? - Service testing the security of email addresses

DNS Server History and Other Information

Domain management services (displaying expiration dates, whois information, DNS, etc.) are features offered by all registrars, but they only allow tracking of one's own domain names. To monitor external domain name lists, specialized services or software are required.

CompleteDNS.com - Research domain nameserver changes and drops

Hosterstats.com/ - History of registrars, DNS, and other useful info

Securitytrails.com - History of whois, DNS, and other useful technical info

DnsCoffee - History of used nameservers