NERD IP info

Detects IPv4 addresses on web pages, queries the CESNET NERD API, and displays results in an interactive popup.

Instantly identify, analyze, and evaluate IP addresses on any web page using the NERD database. NERD IP Info is a tool designed for everyone with interest in network security. It automatically scans the text of the websites you visit, detects IPv4 addresses, and gets their reputation, threat category, and other useful info directly from CESNET's Network Entity Reputation Database (NERD). Stop copying and pasting IP addresses manually. Get critical network insights seamlessly integrated into your browsing workflow. Key Features: -- Automatic detection: Instantly identifies IP addresses within the text of any web page -- One click lookup: click the NERD icon next to an IP to open a popup with a full reputation report -- Right click search: select any text on a page, right-click, and choose "Search using NERD" -- Page scan: scan every IP visible on the current page and see each one color-coded by reputation -- Raw JSON copy: copy the complete API response to your clipboard. -- Recent history -- Site Blocklist/Allowlist: customize which sites the extension works on Required setup A free CESNET NERD API key is required. It is stored only in your browser's local storage. To get the API key, you currently need to manually ask for an account. Visit https://nerd.cesnet.cz/ for more information. Privacy & security -- No Tracking: This extension does not track your browsing history or collect personal data. -- Local Storage: Your API token is stored safely and locally on your device using Chrome's secure storage -- No browsing history, page content, or lookup data is transmitted anywhere except to NERD for the reputation lookups you explicitly request. -- Recent lookups and cached, reputation data are kept on your device and can be cleared at any time from the options page.