Privacy Policy

Introduction

ILSERBY (“we”, “us”, “our”) operates ILSERBY, a collection of free developer utilities and network lookup tools. This Privacy Policy explains what information we process, why we process it, and what choices you have. By using the site you acknowledge this policy. If you do not agree, please do not use our services.

Information we collect

Depending on how you use the site, we may process the following categories of data:

• Usage and server logs — IP address, browser type, operating system, referring URL, pages viewed, timestamps, and similar technical data collected automatically by our web servers for security, diagnostics, capacity planning, and abuse prevention.
• Tool inputs and lookup queries — domains, IP addresses, hostnames, URLs, proxy strings, and other values you submit to interactive tools. Network checks are processed on our servers to produce results and may be stored in a cache for a limited period.
• Rate-limiting and anti-abuse records — coarse counters and identifiers (typically tied to IP address) used to enforce fair use and protect the service.
• Contact form submissions — name, email address, subject line, and message body when you write to us.
• Cookies and similar technologies — as described in our Cookie Policy, including cookies used for essential operation, preferences, analytics, and advertising.
• Advertising and analytics data — Google Analytics measures usage from your first page view. When ad partners are enabled, they may set additional cookies according to their policies.

How we use information

• Provide, maintain, and improve our tools and website.
• Return lookup results, generate outputs, and display pages you request.
• Detect, prevent, and respond to abuse, fraud, and security incidents.
• Measure traffic, performance, and feature usage through analytics.
• Serve and measure advertising where ad units are present.
• Respond to contact messages and support requests.
• Comply with legal obligations and enforce our Terms of Use.

Legal bases (EEA/UK users)

Where the GDPR or similar laws apply, we rely on: legitimate interests (operating and securing the service, analytics, fraud prevention); contract (providing tools you request); consent (advertising cookies where required); and legal obligation where applicable.

Sharing and third parties

We do not sell your personal information. We may share data with:

• Infrastructure providers — hosting, CDN, and email delivery services that process data on our behalf.
• Analytics providers — to understand how the site is used.
• Advertising partners — such as ad networks or mediators when ad slots are active.
• Public data sources — network tools query registries, DNS, certificate transparency logs, and similar public services using the identifiers you submit.
• Authorities — when required by law or to protect rights, safety, and security.

Retention

• Lookup cache entries are kept for a limited time (typically up to about seven days) and then expire automatically.
• Server logs are retained for a limited operational period unless a longer period is required for security or legal reasons.
• Contact messages are kept as long as needed to handle your request and for a reasonable archive period.
• Cookie lifetimes vary by purpose; see the Cookie Policy.

International transfers

Our servers and service providers may be located in countries other than yours. Where required, we use appropriate safeguards for cross-border transfers.

Your rights

Depending on your location, you may have rights to access, correct, delete, restrict, or object to certain processing, and to withdraw consent where processing is consent-based. You may also have the right to lodge a complaint with a supervisory authority. To exercise your rights, use our contact form.

Children

ILSERBY is not directed at children under 16. We do not knowingly collect personal information from children.

Changes

We may update this Privacy Policy from time to time. The “Last updated” date below reflects the latest version. Continued use after changes constitutes acceptance of the updated policy.

Last updated: September 1, 2026