netcup wiki



Important technical terms


A domain is an unique address used for websites, but also for other web services. Domains can be registered for a set timeframe and can be connected to a Virtual Private Server (VPS), Root Server or Webhosting instance, offering an easily shared address through which others may access your content or web application directly.

Top-level Domain

A Top-level Domain (TLD) is the part of the domain that follows the dot. There are both TLDs that are assigned to geographic locations or countries (e.g. . at, .de, .eu) and generic TLDs that are assigned to specific functions or are intended to indicate membership in a specific group (e.g. .com, .org, .net).


netcup Webhosting is a solution provided by us for hosting content as part of a webpage or web application online.

Server/VPS/vServer/Root Server

netcup Server products offer users access to a remote server that they may use with an operating system of their choice. These can be connected to a netcup Domain for easy access.

Recrod Types

DNS Record Types are entries stored in DNS servers to provide information about a domain, such as its IP address, mail server, etc. The common types are A (Address), AAAA (IPv6 address), CNAME (Canonical Name), MX (Mail Exchange), NS (Name Server), and PTR (Pointer).

A (Address) Record

An A Record (Address Record) points a domain or subdomain to an IPv4 address.

AAAA (IPv6 address) Record

An AAAA Record points a domain or subdomain to an IPv6 address.

CNAME (Canonical Name) Record

A CNAME Record (Canonical Name Record) is used to redirect a domain or subdomain to another domain name.

MX (Mail Exchange) Record

An MX Record (Mail Exchange Record) directs email traffic to a specified mail server.

NS (Name Server) Record

An NS Record (Name Server Record) delegates a DNS zone to use the given authoritative name servers.


PTR (Pointer Record) is a type of DNS record that maps an IP address to a hostname in a process called reverse DNS lookup. This helps to verify the IP address associated with a specific domain, and is often used for troubleshooting and spam filtering.

Last update: 18/09/2023