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Domains & DNSUpdated: 02/11/2026

Netcup domains & DNS: the complete guide

Register, transfer and manage domains, DNS and DynDNS — with official Netcup sources and a clear note on what the €5 voucher does not cover.

Important: under the official Netcup voucher terms, vouchers do not apply to domains, VPS ARM, VPS Lite and merchandise. Domains use the official domain price; check it in the Netcup shop.

DNS quick reference

TypePurposeExample
AIPv4 addressexample.com → 203.0.113.10
AAAAIPv6 addressexample.com → 2001:db8::10
CNAMEAlias to a hostnamewww → example.com.
MXMail server with priority10 mail.example.com.
TXTSPF, DKIM, DMARC, verification"v=spf1 mx -all"

Register a domain

Netcup offers more than 400 domain extensions. Registration happens in the Netcup shop; after ordering, you manage the domain, DNS and contacts in the Customer Control Panel (CCP).

For .de domains, DENIC rules apply; international extensions may have additional verification or transfer requirements. Check the terms at checkout.

  • Search for the domain in the shop and add it to the cart.
  • Enter the correct owner handle — it determines the domain owner.
  • After activation, verify the DNS zone and nameservers in the CCP.

Transfer a domain

A transfer to Netcup requires an auth code (AuthInfo) and release by the current registrar, depending on the TLD. A transfer usually extends the term by one year; the exact rules depend on the extension.

Important: a transfer is not a website migration. Content, mailboxes and DNS rules must be migrated separately.

Manage DNS

In the CCP you manage A, AAAA, CNAME, MX, TXT and other records. For external domains and more complex setups, Netcup offers CloudDNS. The official help pages explain the fields and nameserver configuration.

Typical mistakes are a wrong TTL, a missing trailing dot on an FQDN, or an MX record pointing to a hostname without an A/AAAA record. Always verify changes with dig or nslookup.

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DynDNS

DynDNS updates an A or AAAA record automatically when your public IP changes. Netcup documents the Dynamic DNS interface in its help center; routers and servers use different update URLs and authentication methods.

Our DNS guide shows how to prepare records and test updates. For the exact Netcup API, use the official documentation.

SSL and DNSSEC

For web hosting, Netcup provides Let’s Encrypt certificates. On your own server, you install the certificate yourself (e.g. with certbot) and add the DNS-01 or HTTP-01 challenge. DNSSEC can be enabled in DNS management where the TLD supports it.

Included domains in web hosting

Many web hosting plans include one or more .de domains. The included domain is selected during ordering; additional domains are billed separately. Check the exact number in the plan before ordering.

Official sources & further reading

Buy a domain at NetcupOfficial shop; the voucher does not apply to domains.Domain transferAuth code and release by the old registrar.DNS settingsRecords, nameservers and TTL.Dynamic DNSUpdate URL and API.SSL with Let’s EncryptWeb hosting certificates.

Check a domain at Netcup

See availability, price and TLD terms directly in the official shop.

Open the domain shop ↗

The €5 voucher does not apply to domains.

Frequently asked questions

Can I use the €5 new-customer voucher for a domain?

No. Under the official Netcup voucher terms, vouchers do not apply to domains, VPS ARM, VPS Lite and merchandise. The domain price is not reduced.

How long does a domain transfer take?

It depends on the TLD and release by the current registrar. .de transfers can complete quickly after DENIC release; international extensions often take longer. Check the status in the CCP.

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Can I use DNS for external domains?

Yes, with Netcup CloudDNS. Set the Netcup nameservers at your registrar, then manage records in the CloudDNS interface.

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Does Netcup support DNSSEC?

Yes, DNSSEC can be enabled for supported TLDs in DNS management. The exact steps and limitations are in the official DNSSEC documentation.

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