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Our Authoritative DNS (AuthDNS) cluster announces and 2001:67c:e0::/48 from AS 197000. The service hosts reverse DNS zones,, and provides secondary service for various ccTLDs. The cluster is composed of three core instances located in Amsterdam, London and Stockholm. At each of these sites, a router distributes the DNS queries across multiple servers, running a mix of BIND, Knot DNS and NSD. The capacity of these core sites is supplemented by Hosted DNS instances. These single-server instances run in ISP networks or are connected to Internet Exchanges. If you would like to host such a server, please send us your application.

Requirements Apply Now


The RIPE NCC offers a best-effort secondary name service to the other Regional Internet Registries (RIRs) and some country code top-level domain (ccTLD) operators who are in the start-up phase of their operations.

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Reverse DNS

Reverse DNS delegations allow applications to map to a domain name from an IP address.

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