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DNS (Domain Name System)

The RIPE NCC provides a variety of DNS related services.

The RIPE NCC operates K-root, one of the 13 Internet root name servers. The K-root service is provided by a set of distributed nodes using IPv4 and IPv6 anycast.

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Our Authoritative DNS (AuthDNS) server carries over 4,000 zones. The service hosts reverse DNS zones,, and provides secondary service for various ccTLDs.

The RIPE NCC's DNS Monitoring Service (DNSMON) is an active measurement service that provides a comprehensive, objective and up-to-date overview of the quality of the service offered by high-level Domain Name System (DNS) servers.

The RIPE NCC is one of many operators participating in the AS112 Project, which aims to provide a clean, well-lit destination for DNS queries concerning RFC1918 and other DSUA networks.