IP & domain lookup

Browser

Look up an IP address, or a domain’s WHOIS/RDAP registration data.

Runs in your browser. Your files are not uploaded.

IP address lookup

Shows your own public IP by default — enter another to look it up instead.

Registration data via RDAP — the modern, structured successor to WHOIS.

Make a QR code for a link, text, Wi-Fi network or contact.

Scan a QR code with your camera, or decode one from an image.

Generate CODE128, EAN-13, UPC, CODE39 and other barcode formats.

Work out age or the time between two dates, down to the day.