Privacy policy

Calculation data

The service is SubnetTidy. Operator contact information is on the Contact page. This notice was prepared on October 17, 2026.

Entered IPs, CIDRs, network labels, plans and practice answers are processed in your browser tab. There is no calculation-upload API or working-data database. Calculation inputs are not placed in the page URL. Closing or reloading the tab removes work and scores. Downloaded files remain on your device.

Choices remembered on this device

Your language and analytics choice may be stored in localStorage until changed or cleared through browser settings. Calculation inputs and exports are not automatically saved. Changing languages opens a new page and resets the current work.

Google Analytics

If you allow analytics, Google Analytics 4 may process page-use information. Its script is not loaded before you allow it. You can reject analytics through Privacy choices, and every tool continues to work.

Page URLs configured by our code exclude queries and fragments. Entered addresses, network labels and answers are not sent as analytics events. Visit requests may involve Google servers and cookies. Retention follows the actual operator’s Analytics settings. Rejecting analytics does not retroactively delete previously processed information.

Advertising and consent

When enabled, Google AdSense and advertising partners may process cookies or similar technologies, visitors’ IP addresses and browser information. Local processing of addresses entered in the calculator is separate from advertising requests.

Applicable advertising choices are supplied through the certified CMP message published by the operator. The analytics choice panel is not an advertising CMP. Use the advertising privacy button or Google’s supplied choice links when available to revisit your selection.

Requests and contact

The web server and hosting provider may process connection IPs and request information to deliver pages. Actual retention and processing depend on the hosting environment. There is no feature for submitting calculation data or output files.

For privacy questions, use the operator details on the Contact page. To remove your remembered language and analytics choice, clear this site’s data in your browser.