DNSteenuste

DNSteenuste, or DNS services, are a set of network services that translate human-readable domain names into IP addresses and direct Internet traffic. They enable browsers and applications to locate resources such as websites, mail servers, and APIs.

Key components include authoritative name servers, which store DNS zone data; recursive resolvers, which fetch data on behalf of users; and DNS hosting providers that offer managed infrastructure.

DNS records and zones. Zone files contain A and AAAA records for IPv4 and IPv6 addresses, MX records for mail servers, CNAME for aliases, NS records, TXT for text data, and others like SRV. TTL values determine caching duration, and propagation can take time after updates.

Performance and reliability. DNS relies on caching, anycast networks, and redundant servers to improve speed and availability. Privacy features such as DNS over HTTPS (DoH) and DNS over TLS (DoT) encrypt queries in transit, while DNSSEC helps verify responses and prevent tampering.

Security considerations and governance. Operators must guard against DDoS, cache poisoning, and tampering. Organizations may run their own authoritative servers or use third-party providers, balancing control, cost, and resilience. DNS remains foundational to Internet services and is subject to regulatory and privacy considerations.