Welcome to HiDNS. This service provides free subdomain registration under the suffixes hidns.co and hidns.vip. By using this service, you acknowledge that you have read, understood, and agree to be bound by these Terms of Service. If you do not agree, please discontinue use of HiDNS immediately.

1. About HiDNS

HiDNS is an open public suffix service designed to provide simple, free internet infrastructure resources, helping personal websites, blogs, and learning projects connect to the internet more easily.

HiDNS operates using an invitation code registration + intended use statement (ticket) model:

• Invitation codes are intended to build a healthy community through personal trust and referrals, not to restrict access;
• During registration, users must describe their intended use for the domain in a ticket;
• However, we do not pre-screen content or intended use at the time of registration;
• You assume complete legal and regulatory responsibility for your domain and all uses thereof;
• HiDNS is not responsible for any content, risks, or legal issues arising from your use of the domain.

2. Service Availability

As HiDNS is a free service, we make no guarantees regarding:

• Continuous service availability;
• Immediacy or stability of domain resolution;
• Feature completeness or data persistence.

You understand and agree that:

• The service may be temporarily interrupted due to maintenance, attacks, technical issues, or force majeure;
• HiDNS may suspend resolution based on security or abuse concerns;
• You are responsible for backing up important configuration data.

3. Account and Domain Rules

3.1 Account Limitations

• Each user is limited to one account.
• Multiple account registration constitutes abuse and will result in restriction or deletion.

3.2 Domain Limitations

• Each account is limited to one subdomain.
• For system management, security auditing, and stability reasons, HiDNS does not currently support modifying, renaming, or changing registered subdomain prefixes.

3.3 Email Requirements

• Registration requires a long-term, regularly used email address capable of receiving messages.
• If we cannot contact you regarding security issues, your domain may be suspended.

4. Subdomain Naming Guidelines

To protect the reputation and security of our public suffix:

• Subdomain prefixes should be concise, appropriate, compliant, and relevant to their intended use;
• Prohibited:
  • Offensive, discriminatory, hateful, or illegal terms;
  • Names impersonating government agencies, law enforcement, or well-known brands;
  • Names that could be misleading as official services;
  • Deliberately using sensitive, borderline, or misleading terms.

HiDNS reserves the right to reject or suspend non-compliant names.

5. Prohibited Uses and Conduct

You must commit to complying with this policy and all applicable laws. The following activities are prohibited when using this service:

5.1 Strictly Prohibited Uses (Immediate Ban)

• Phishing
• Spam distribution or related activities
• Malware, trojan, virus distribution, or C2 control
• Unauthorized mirroring, cloning, or malicious proxying of third-party websites (websites you do not own)
• Hosting or distributing pirated content (software, movies, music, etc.)
• Using the domain for temporary/disposable email services
• Fraud, scams, or identity impersonation
• Any form of hacking, scanning, or penetration testing (unless on your own assets)
• Unauthorized data collection, scraping, theft, or interception
• Illegal content (including but not limited to terrorism, violence, child exploitation, etc.)

5.2 Abuse

• Multiple account registration to circumvent limitations
• Falsifying or tampering with registration information
• Unauthorized bulk automated registration
• Abuse of customer service or submitting false abuse reports
• Harassment or threats against HiDNS staff or volunteers

5.3 Technical Violations

The following activities against HiDNS service infrastructure (authoritative servers, management systems, APIs, official website, registration processes) are prohibited:

• Attacking, scanning, intrusion, or unauthorized access;
• Bypassing security mechanisms, permission verification, or interface restrictions;
• Exploiting vulnerabilities, scripts, or automation to abuse registration or submission requests;
• Generating malicious traffic or abnormal requests to disrupt service stability;
• Unauthorized bulk scraping, API abuse, or simulated registration behavior;
• Reverse engineering, decompiling, or cracking service-related software.

5.4 Prohibited Use for Domain Redistribution or Bulk Subdomain Services

To protect the health of the public suffix ecosystem and prevent abuse for mass subdomain distribution, bulk site networks, or automated account operations:

• Using HiDNS subdomains to build third-party subdomain distribution platforms, bulk subdomain generation services, or automated allocation systems is prohibited;
• Using HiDNS subdomains as the base domain for "card distribution," "automatic allocation systems," "bulk site-building systems," or similar purposes is prohibited.

6. Violation Response

• Minor violations: We will contact users via ticket and email for remediation, with specific requirements provided in the ticket and email;
• Serious violations (such as phishing, malware, or activities listed in Section 5.1): Domains will be immediately banned without prior notice, and no appeals will be accepted;
• If a domain poses a public safety risk, we may:
  • Report to law enforcement;
  • Provide necessary information to cooperate with investigations;
  • Implement permanent bans.

7. Domain Renewal and Expiration Policy

7.1 Domain Validity and Renewal

• Each domain has a validity period, and users must complete free domain renewal within 90 days before expiration;
• Renewal can be completed through the account management page or following system notification instructions.

7.2 Expiration and Cancellation

• If renewal is not completed within 90 days before expiration, the domain will be considered inactive;
• The domain will be automatically cancelled after expiration and released for others to register;
• Configuration and data for cancelled domains cannot be recovered.

7.3 Renewal Reminders

• We will send renewal reminders via email before domain expiration;
• Please ensure your registration email can receive messages to avoid missing the renewal deadline.

8. Service Modifications and Termination

• HiDNS may modify these Terms of Service, adjust usage limitations, or terminate the service at any time;
• If your use threatens platform security or violates these Terms, we may immediately terminate service.

9. Intellectual Property

• You retain all rights to content published through HiDNS subdomains;
• HiDNS retains intellectual property rights to the service name, trademarks, logos, and system design;
• Without authorization, you may not use the "HiDNS" name or trademarks for commercial purposes that could cause confusion.

10. Disclaimers and Limitation of Liability

10.1 Service "As Is"

HiDNS provides the service on an "as is" and "as available" basis, without any express or implied warranties regarding:

• Service suitability, reliability, accuracy, or error-free operation;
• The service meeting your specific needs;
• Accuracy or reliability of any content obtained through the service.

10.2 Limitation of Liability

To the maximum extent permitted by law, HiDNS and its operators, employees, and volunteers are not liable for:

• Direct, indirect, incidental, special, or consequential damages resulting from use or inability to use the service;
• Data loss, business interruption, lost profits, or other economic losses;
• Illegal acts committed by third parties through your domain;
• Any losses resulting from service interruptions, errors, or vulnerabilities.

10.3 User Indemnification

You agree to indemnify and hold HiDNS harmless from any claims, losses, liabilities, and expenses (including reasonable attorney fees) arising from:

• Your violation of these Terms of Service;
• Content published using your domain that infringes third-party rights;
• Your violations causing HiDNS to suffer losses or legal liability.

11. Governing Law and Dispute Resolution

11.1 Governing Law

These Terms of Service are governed by and construed in accordance with the laws of the People's Republic of China.

11.2 Dispute Resolution

• Any disputes arising from these Terms of Service shall first be resolved through amicable negotiation;
• If negotiation fails, either party may submit the dispute to the people's court in the jurisdiction where HiDNS is located;
• During dispute resolution, both parties shall continue to perform other provisions of this agreement not involved in the dispute.

12. Miscellaneous

12.1 Severability

If any provision of these Terms is deemed invalid or unenforceable, that provision will be adjusted or removed to the necessary extent, without affecting the validity of other provisions.

12.2 Entire Agreement

These Terms of Service, Privacy Policy, and other policy documents we publish constitute the entire agreement between you and HiDNS.

12.3 Modifications

• HiDNS may modify these Terms of Service at any time;
• Modified terms will be published via website announcement or email notification;
• Continued use of the service constitutes acceptance of the modified terms.

13. Contact Information

For questions, suggestions, or support, please contact us:

Email: [email protected]

Last Updated: December 11, 2025

By continuing to use HiDNS, you acknowledge that you have read, understood, and agree to comply with these Terms.