The IPAddress.to Browser Extension: IP, WHOIS, DNS and Fraud Score for Every Site You Visit
· 4 min read
Most lookups start the same way: you are on a site, something about it makes you curious or suspicious, and you copy the domain into a new tab to check where it is hosted. The IPAddress.to browser extension removes that trip. Click the icon and the popup already knows which site you are on. It shows the IP address, location, ISP and network, with WHOIS, DNS records and a fraud score one tab further. It is free, works in Chrome and Firefox, and does nothing at all until you open it.
What the popup shows
The popup opens on the IP Info tab for the current site: its address, city and country, ISP, ASN and reverse DNS, with a flag and a small map. Four more tabs sit beside it:
- WHOIS — registrar, creation and expiry dates, name servers and status flags, parsed into a card. The raw record is a toggle away for the cases where parsing is not enough.
- DNS — the domain's A, AAAA, MX, NS and TXT records. Useful mid-deploy, or when you want to know who handles a company's mail before replying to it.
- IP Score — the same 0–100 risk number as our Fraud Score tool, with the reasons listed: VPN, proxy or Tor, datacenter or hosting range, threat-feed hits, network type. How IP fraud scores work explains what each band should mean to you.
- My IP — your own public IPv4 and IPv6, location, ISP and connection flags. The quickest way to confirm a VPN actually switched on.
There is also a context menu. Select any IP address or domain on a page, or right-click a link, and choose Lookup on IPAddress.to to open the full result in a new tab.
Why we built it
The website answers the question "what do you know about this address?" well, but it needs you to bring the address. In practice the address is almost always the site in front of you, and copying it is a small tax paid dozens of times a day by anyone who works with networks, email, security or ads. The extension pays that tax once, at install time.
It also keeps the answers consistent. The popup calls the same JSON API as the site, so a score or a WHOIS record you see in the toolbar is exactly what you would see here, from the same in-house data. Nothing is fetched from third parties on your behalf.
What it does not do
Browser extensions have a deserved reputation for watching everything, so the design is deliberately narrow:
- No content scripts. The extension injects nothing into pages and cannot read what is on them. It asks the browser for the active tab's hostname only when you open the popup.
- Minimal permissions. Active tab, tabs, context menus and clipboard write. The clipboard permission exists for the copy buttons next to each value.
- No accounts, no tracking identifiers, no analytics inside the extension.
- Local pages stay local. Browser internal pages, localhost and private network addresses are never sent anywhere. The My IP tab still works on those pages.
Installing it
- Chrome, Edge, Brave, Opera, Vivaldi: install from the Chrome Web Store. All Chromium browsers share the same extension platform, so one listing covers them.
- Firefox: install from Firefox Add-ons. Firefox 109 or newer on desktop.
- Pin it. After installing, pin the icon to the toolbar so it is always one click away. Pinning is optional; the popup also opens from the extensions menu.
Both store links, a preview of the popup and a full FAQ are on the extension page. Mobile browsers do not support extensions, so open that page on your computer.
Feedback
The current version is 1.4.1.1. If you have a request, or you find a page where the popup gets something wrong, the contact form reaches the people who maintain it. Mention the version shown at the bottom of the popup.