Last updated: August 2, 2025
🔒 Your Privacy is Our Priority
SubnetCalculator.dev is designed with privacy in mind. All subnet calculations happen entirely in your browser - we never see, store, or transmit your IP addresses or network information.
Information We Collect
Information We DO NOT Collect
- IP Addresses You Calculate: All subnet calculations happen in your browser using JavaScript. Your IP addresses never leave your device.
- Network Information: We don't store, log, or transmit any network details you enter into our calculator.
- Personal Network Data: Your subnet configurations, CIDR blocks, and network designs remain completely private.
Information We May Collect
- Analytics Data: We use Google Analytics to understand how visitors use our site (page views, time spent, general location by country).
- Technical Information: Standard web server logs including your IP address, browser type, and referring website.
- Cookies: We use cookies for analytics and to improve your experience on our site.
How We Use Information
The limited information we collect is used to:
- Improve our subnet calculator tool and website performance
- Understand which features are most helpful to network engineers
- Create better educational content about subnetting and networking
- Ensure our website works properly across different browsers and devices
Data Security
We implement appropriate security measures to protect your information:
- Client-Side Processing: All calculations happen in your browser - no network data is transmitted to our servers
- HTTPS Encryption: All communication with our website is encrypted using SSL/TLS
- No Data Storage: We don't store your subnet calculations or network information
- Minimal Data Collection: We only collect what's necessary to operate and improve our service
Third-Party Services
We use the following third-party services:
- Google Analytics: For website analytics and performance monitoring
- AWS Amplify: For website hosting and content delivery
- Unsplash: For blog post images (images are loaded from their CDN)
These services have their own privacy policies and may collect information as described in their respective privacy policies.
Cookies
We use cookies to:
- Remember your calculator preferences (like cloud provider selection)
- Analyze website traffic and usage patterns
- Improve website performance and user experience
You can disable cookies in your browser settings, though this may affect some website functionality.
Your Rights
You have the right to:
- Access: Request information about what data we have about you
- Correction: Request correction of any inaccurate information
- Deletion: Request deletion of your information
- Opt-out: Opt out of analytics tracking using browser settings or ad blockers
Children's Privacy
Our service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.
Changes to This Policy
We may update this privacy policy from time to time. We will notify you of any changes by posting the new privacy policy on this page and updating the "Last updated" date.
Contact Us
If you have any questions about this Privacy Policy, please contact us:
💡 Remember
Your network calculations are completely private. We built SubnetCalculator.dev to be a secure, client-side tool that respects your privacy while helping you design better networks.