We use cookies on our website to provide you with the best possible user experience. By continuing to use our website or services, you agree to their use. More Information.
Domains & Hosting

Domain Security

Keep your domain safe from attack

Enter at least one character.
Your domain is a valuable asset. Protect it from third-parties and threats with our add-ons, Domain Guard and DNS Pro.
Woman with glasses sitting at a desk

How to get Domain Guard or DNS Pro

Add extra security to all your IONOS domains.
If you don't have a domain, search for the one you want in the search bar above.
Add Domain Guard or DNS Pro when prompted during checkout.
Activate the security features with one click in your IONOS account.
Already have an IONOS domain? Log in and add DNS Pro or Domain Guard any time.

Protect your domain with extra security features

Domain Guard

Take control of your domain and its DNS traffic.

  • Secure access rights with two-factor authentication
  • Verify DNS traffic with DNSSEC encryption
  • Get proof of domain ownership

Applies to all new and existing domains within a contract.

First year for $1, then $15/year

Protect your domains
Illustration of person sitting on a chair, signing a contract

Domain Guard features in detail

Icon: Safety shield with blue tick

Protection from DNS hijacking

Hackers could redirect your domain to fraudulent or malicious websites, potentially allowing them to steal one of user's credit card details, or even claim legal ownership of your domain. Domain Guard counters these attacks and protects your DNS records.
Icon: Two-factor authentication

Two-factor authentication

Any changes to your domain and its records must go through an additional verification step where a security link is sent to your email address. This adds an extra layer of security and prevents hackers or unauthorized third parties from stealing your domain.
DDoS protection icon

Improved security with DNSSEC

Your DNS records store information on how your domain is connected to an IP address. Domain Guard protects your DNS records through DNSSEC, leaving hackers unable to manipulate these important details or reroute them to fake destinations.
Icon: Security validation; Document with blue security shield and ticks

Authenticated proof of ownership

IONOS will provide you with a domain ownership document free of charge. You can use this document if you need to prove domain ownership to any third parties, or when dealing with various authorities, institutions or companies.


Improve load times, and prevent DNS failure and website downtime.

  • Reduce the risk of DNS hijacking, spoofing, and DDoS attacks
  • Premium Anycast DNS, Secondary DNS and DNSSEC included
  • Back up and restore DNS zones, define and use your own DNS templates

Applies to all existing and new domains within a contract.

12 months for $1/month, then $2.50/month

Protect your domains
Illustration of a person using a server with virus protection; Green screen show's it's safe

DNS Pro, explained

Icon: www domain

Premium Anycast

Reduce your website's loading time, no matter where your visitors are located. Unlike standard name servers, Premium Anycast has server locations on all continents so your visitors always profit from a fast name resolution.
Icon: Database backup

DNS Backup

Manage custom templates for groups of DNS records to configure DNS zones quickly and easily. Create backups of your entire DNS zone and restore it at any time, reducing costly downtime.
Icon: Padlock


Make your domain name system more secure with an added layer of authentication. DNSSEC prevents hackers from manipulating your DNS records and rerouting queries to rogue servers.
Icon: Safety shield with blue tick

Secondary DNS

The operator of an authoritative name server can use IONOS as a secondary DNS provider. This increases the availability and performance of name resolution.

Why buy a domain at IONOS

Each domain contract is packed with great features.
Icon: Safety shield with blue tick


For reliable protection of your site visitors, one Wildcard SSL certificate is included per contract. Domain Guard or DNS Pro can be added as an optional extra.
Domain icon showing linked subdomains

10,000 subdomains

Get up to 10,000 subdomains to customize and structure your website, for example: news.yourname.com.
Email icon that looks like an envelope


A professional email address (for example: you@yourname.com) connected to your domain with 2 GB of mailbox space to start. Upgrade anytime for more storage.
Icon with a security shield and padlock

Domain lock

The domain transfer lock keeps your domain from being transferred by unauthorized third parties.
Icon with a socket and plug

Easy setup

One-click activation makes it easy to connect your domain with email, hosting or your social media profiles.
Technical support icon

24/7 customer support

Our professional, knowledgeable support team is always available for help and advice, 24/7.

Domain protection and security

FAQ – Frequently asked questions

Protecting your domain name is critical to maintaining a healthy online presence. One way of doing this is with private domain registration. This hides your personal contact data from the public, effectively masking your registration details with the name of your web hosting provider. It's only available with certain domains.

Having authenticated proof of your domain ownership and preventing third-party access to your personal domain data can also help protect your domain name.

IONOS offers a wide range of domain security and protection services. With IONOS domain security products like Domain Guard and DNS Pro, you can protect your domain from DDoS attacks, safeguard against DNS hijacking and spoofing via DNSSEC, ensure faster, reliable, and secure DNS resolution, and choose Premium Anycast or secondary DNS with DNS backup and restore. Customized DNS templates are also offered as a part of an optional add-on that will work with any domain.

As long as you do not proactively cancel your domain (for which you will receive reminders from us in advance), we will auto-renew your contract. This way, you do not have to worry about your domain expiring unexpectedly.

Private domain registration makes sure that your Whois information is not visible to third parties. The Domain Guard, however, protects you against hackers trying to access and alter your DNS records.

Man with telephone handset

Your personal consultant

At IONOS, you have a dedicated contact person for personalized advice, tips to boost your online success, and technical support. Reach them via phone, chat and email, all at no cost to you as an IONOS customer.

Learn more