At IPRangeCalculator.com, your privacy is fundamental to how our software is designed. We believe calculation tools should not spy on their users or transmit private network topography to remote databases. This policy explains what information is and is not collected when you use the website, and the choices you have.
1. Zero Collection of Network Data
When you input IP addresses, CIDR notation, subnets, or host counts into our calculator:
- All calculations happen locally in your web browser using client-side JavaScript.
- We never log, transmit, process, or store your IP addresses or network topologies on our servers.
- We do not correlate your internal RFC 1918 subnets with your external public IP.
2. What We Collect & Server Logs
Like almost all websites, basic access logs may be recorded by our CDN / hosting provider (such as Cloudflare or Vercel) for DDoS mitigation, system health, and caching:
- Standard HTTP request headers (user agent, browser version, timestamp, requested URI) and the IP address of the connecting device.
- Coarse geographical region (country level) for regional CDN edge caching.
These logs are kept only as long as the hosting provider needs them for security and operations, and they are not used to build profiles of individual visitors.
3. Cookies, Analytics and Local Storage
IPRangeCalculator.com does not set advertising or tracking cookies, does not run third-party analytics or cross-site trackers, and does not use fingerprinting scripts. The tool works without cookies. If a future feature stores preferences (such as a favourite CIDR preset), it will use your browser's local storage on your own device only, and this policy will be updated before that happens.
4. Third-Party Services
A small number of service providers are involved in delivering the website:
- Hosting and CDN provider — serves the website files and records the access logs described above.
- Google Fonts — the site's typefaces are loaded from Google's font servers, which receive your IP address and browser details when the fonts are requested. See Google's Privacy Policy.
- Form delivery service — if you use the contact form, your message may be passed through an email or form-processing provider solely to deliver it to us. If you choose the email fallback, your message is sent by your own email provider.
We do not sell, rent, or share personal information with advertisers or data brokers.
5. Contact Form Inquiries
If you choose to contact us via our contact form or support email, we receive the name, email address, and message contents you provide. This information is strictly used to reply to your question and is never shared, sold, or rented to third-party advertisers. We keep messages only only as long as needed to answer and follow up.
6. Your Rights
Depending on where you live (for example under the EU/UK GDPR or the California Consumer Privacy Act), you may have the right to:
- ask what personal information we hold about you and receive a copy of it;
- ask us to correct or delete that information;
- object to or restrict certain processing, or withdraw consent you have given; and
- lodge a complaint with your local data protection authority.
Because the calculator itself collects no personal data, these requests will normally relate only to messages you have sent us. We respond to verified requests within 30 days.
7. Children's Privacy
The website is a general-audience technical tool and is not directed at children under 13. We do not knowingly collect personal information from children.
8. Security
Our website is served strictly over encrypted HTTPS protocols with modern TLS ciphers and HSTS protection to prevent man-in-the-middle eavesdropping.
9. Changes to This Policy
We may update this policy when the website or the law changes. The "Last updated" date at the top of this page shows when it was last revised.
10. Contact Regarding Privacy
If you have any questions, suggestions, concerns, or privacy requests about our privacy practices, please contact us through our contact page or email us at privacy@iprangecalculator.com.