This Privacy Policy explains how ipv4calc.com ("we", "us", or "our") collects, uses, and shares information when you visit and use our free IPv4 subnet calculator. We are committed to being transparent about our data practices.
The subnet calculator processes your input (IP address and prefix) on the server and immediately returns results. We do not store, log, or retain any calculation inputs or results. We do not require you to create an account, provide an email address, or submit any personal information to use the calculator.
Like most websites, our web server may automatically record standard technical information when your browser makes a request. This may include your IP address, browser type, operating system, referring URL, and the pages you visit. This information is used solely for diagnosing technical issues and understanding aggregate traffic patterns, and is not linked to any personally identifiable information.
We do not set any first-party cookies ourselves. However, third-party services we use — including Google AdSense — may set cookies on your device. These cookies are governed by those services' own privacy policies. You can control or disable cookies through your browser settings.
This site displays advertisements served by Google AdSense. Google uses cookies and similar tracking technologies to show you relevant ads based on your browsing history and interests. This is known as interest-based advertising.
We use the following third-party services which may collect data independently of us:
We are not responsible for the privacy practices of these third-party services and encourage you to review their policies directly.
ipv4calc.com is not directed at children under the age of 13. We do not knowingly collect any personal information from children. If you believe a child has provided us with personal information, please contact us and we will take steps to delete it.
Depending on your location, you may have rights under applicable privacy law (including GDPR for EU residents and CCPA for California residents) to access, correct, or delete personal data we hold about you. Because we do not collect or retain personal data beyond standard server logs, there is generally nothing to access or delete. For any privacy-related questions, please use the contact information below.
We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated effective date. Continued use of the site after changes constitutes acceptance of the updated policy.
If you have any questions about this Privacy Policy, you can reach us via the About page.