Terms of Service

Please read these Terms of Service (“Terms”) carefully before using the DNS.SB website and services operated by xTom GmbH (“we”, “us”, “our”, or “DNS.SB”).

1. Acceptance of Terms

By accessing or using DNS.SB services - whether through a web browser, operating system DNS settings, or any software that interfaces with our DNS resolvers - you agree to be bound by these Terms, our Privacy Policy, and all applicable laws and regulations.

If you do not agree with any of these terms, you must not use our services.

2. Service Description

DNS.SB provides public DNS resolver services, including:

Standard DNS resolution (UDP/TCP port 53)
DNS over TLS (DoT, port 853)
DNS over HTTPS (DoH, port 443)

Our services are designed to provide fast, secure, and private DNS resolution with no logging of DNS queries.

3. Personal and Non-Commercial Use

DNS.SB services are provided free of charge for personal and non-commercial use.

Under this license, you may:

Use our DNS resolvers for personal devices and home networks
Configure applications and browsers to use our DoH/DoT services
Recommend our services to others

4. Commercial Use and Licensing

Commercial use requires prior authorization. This includes, but is not limited to:

Using DNS.SB as an upstream resolver for commercial products or services
Integrating DNS.SB into software or hardware sold to customers
Operating a business that relies on DNS.SB for critical infrastructure
Reselling or redistributing DNS.SB services

If you wish to use DNS.SB for commercial purposes, please contact us to discuss licensing options. We offer custom solutions including:

Dedicated DNS infrastructure
Custom filtering and security policies
Branded DNS services
Service level agreements (SLAs)
Technical support

5. Prohibited Activities

You may not use DNS.SB services to:

Initiate network attacks: Including but not limited to DDoS attacks, DNS amplification attacks, or cache poisoning attempts.
Conduct unauthorized security testing: Penetration testing or vulnerability scanning without explicit authorization.
Degrade service quality: Generating excessive traffic that impacts service availability for other users.
Facilitate illegal activities: Using our services in connection with any unlawful purpose or to promote illegal activities.
Circumvent access controls: Attempting to bypass any security measures or access restrictions we implement.
Misrepresent your identity: Impersonating DNS.SB or creating confusion about your affiliation with us.

Violation of these terms may result in immediate termination of access without notice.

6. Service Availability

DNS.SB strives to provide reliable service, but we do not guarantee:

100% uptime or availability
Specific response times or latency
Uninterrupted or error-free operation

We may modify, suspend, or discontinue any aspect of our services at any time without prior notice. We are not liable for any modification, suspension, or discontinuation of services.

7. Disclaimer of Warranties

DNS.SB SERVICES ARE PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED.

We specifically disclaim:

Warranties of merchantability
Warranties of fitness for a particular purpose
Warranties of non-infringement
Warranties regarding security, reliability, timeliness, or performance

We do not warrant that our services will meet your requirements or that the results obtained will be accurate or reliable.

8. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, DNS.SB AND ITS AFFILIATES, OFFICERS, EMPLOYEES, AGENTS, AND SUPPLIERS SHALL NOT BE LIABLE FOR:

Any indirect, incidental, special, consequential, or punitive damages
Any loss of profits, data, business, or goodwill
Any damages arising from service interruption or inability to use services

This limitation applies regardless of the legal theory (contract, tort, negligence, strict liability, or otherwise), even if we have been advised of the possibility of such damages.

Some jurisdictions do not allow the exclusion or limitation of certain damages, so some of the above limitations may not apply to you.

9. Indemnification

You agree to indemnify, defend, and hold harmless DNS.SB, xTom GmbH, and their respective officers, directors, employees, and agents from any claims, damages, losses, liabilities, and expenses (including reasonable legal fees) arising from:

Your use of our services
Your violation of these Terms
Your violation of any rights of third parties
Any content or data transmitted through our services

10. Intellectual Property

All content on the DNS.SB website, including text, graphics, logos, and software, is the property of xTom GmbH or its licensors and is protected by intellectual property laws.

You may not:

Copy, modify, or distribute our content without permission
Use our trademarks or branding without authorization
Remove any copyright or proprietary notices

11. Third-Party Links

Our website may contain links to third-party websites or services. We are not responsible for:

The content or practices of third-party sites
Any damages arising from your use of third-party services

Inclusion of any link does not imply endorsement by DNS.SB.

12. Modifications to Terms

We reserve the right to modify these Terms at any time. Changes will be effective immediately upon posting to our website.

Your continued use of our services after any changes constitutes acceptance of the modified Terms. We encourage you to review these Terms periodically.

13. Termination

We may terminate or suspend your access to our services immediately, without prior notice, for any reason, including:

Violation of these Terms
Conduct that we determine is harmful to other users or our infrastructure
Requests from law enforcement or government agencies

Upon termination, your right to use our services ceases immediately.

14. Governing Law and Jurisdiction

These Terms are governed by and construed in accordance with the laws of Germany, without regard to conflict of law principles.

Any disputes arising from these Terms or your use of our services shall be subject to the exclusive jurisdiction of the courts in Düsseldorf, Germany.

15. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

16. Entire Agreement

These Terms, together with our Privacy Policy, constitute the entire agreement between you and DNS.SB regarding your use of our services.

17. Contact

If you have questions about these Terms, please contact us:

Email: admin (at) dns.sb
Address: xTom GmbH, Kreuzstraße 60, 40210 Düsseldorf, Germany

These Terms are effective as of January 17, 2026.