What runs in your browser
All subnetting, CIDR, VLSM, conversion, MAC, extractor and cheat-sheet tools run entirely client-side in JavaScript. The values you type are never transmitted to our server.
What is sent to our server
DNS, Reverse DNS and "What is my IP" tools send the domain/IP you enter to our server so it can run the lookup. We log enquiries and basic request data only to operate and debug the Service.
What is sent to third parties
WHOIS, ASN, IP geolocation and blacklist tools forward your query to public registries and services (e.g. RDAP, ip-api, DNSBL operators). Their handling of that data is governed by their own policies.
Contact form
When you submit the contact form we store the name, email, subject and message you provide so we can reply. We do not sell or share this information.
Cookies & tracking
IP Toolkit does not use advertising or third-party tracking cookies. Only essential cookies (such as the session/CSRF token) are used.
Your choices
Prefer maximum privacy? Stick to the client-side calculators — they work without sending anything anywhere, even offline.