About IPLookup

IPLookup is a free, privacy-first suite of IP address tools built to help anyone understand their internet connection, network information, and IP-related data. No sign-ups, no tracking cookies, and no data storage.

What We Offer

• IP Lookup — Instantly see your public IP address, location, ISP, and ASN.
• VPN Detection — Check if your connection appears to be from a VPN or datacenter.
• DNS Lookup — Query A, AAAA, MX, CNAME, NS, TXT, SOA, and SRV records.
• IP Compare — Compare the location, ISP, and connection type of any two IPs.
• Bulk IP Lookup — Look up multiple IP addresses at once with a progress tracker.
• Networking Glossary — Learn key IP and networking terms.
• Developer API Guide — Code examples in JavaScript, React, Vue, and Node.js.

How It Works

When you visit an IP lookup page, your browser makes a direct request to a public IP data API (ipinfo.io with ipify.org as a fallback). The data is displayed in your browser and never sent to our server. DNS lookups use Cloudflare's DNS-over-HTTPS endpoint — no API key needed.

Technology

IPLookup is built with Astro for static site generation, React for interactive tool components, and Tailwind CSS for styling. The map view uses Leaflet with OpenStreetMap tiles.

Privacy

We do not collect, store, or log any personal data. All IP lookups happen client-side via third-party APIs. No cookies, no analytics, no tracking. See our Privacy Policy for full details.