DNS Lookup
Check any domain's DNS records online: A, AAAA, CNAME, MX, NS, TXT, SOA and CAA. See where a domain points, its mail servers and its nameservers.
See your public IP address (IPv4 or IPv6), its reverse host name, and what your browser tells websites. Works on phones and computers.
This tool asks our server for public information only. Nothing you enter is stored.
This page shows the public IP address your connection uses on the internet, whether it is IPv4 or IPv6, the reverse DNS name that belongs to it, and the user agent and languages your browser sends to every website. It's the address websites, game servers and email servers see, not the private address your router gives your phone or computer. The tool shows it and doesn't save it.
Your router gets one public IP address from your internet provider and shares it with every device on your Wi-Fi. Inside your home, each device has a private address, usually 192.168.x.x or 10.x.x.x, which the internet never sees. So at home this page shows the same address on your phone and your laptop, and it changes when your phone switches to mobile data or another Wi-Fi.
An IPv4 address looks like 203.0.113.25; an IPv6 address is longer, like 2001:db8::25. Many providers give you both, and your browser uses IPv6 when a website supports it, so this page may show an IPv6 address. Both are normal.
This page gives the public address. For a device's private address: on Windows, run ipconfig in cmd and look for IPv4 Address; on a Mac, open System Settings > Wi-Fi > Details; on an iPhone, open Settings > Wi-Fi and tap the (i) next to your network; on Android, open the Wi-Fi settings and tap your network (the menu names vary by phone). Google Chrome and other browsers don't show your IP themselves, so open this page in the browser instead.
Open your router's admin page, usually http://192.168.0.1 or http://192.168.1.1, and look for the list of connected devices or DHCP clients. On Windows, arp -a in cmd lists the devices your PC has recently talked to on the same network.
With a VPN on, such as NordVPN, Proton VPN or your own WireGuard server, this page shows the VPN server's address instead of yours. That's the quick way to check the VPN works: if you still see your home address, the VPN is off or leaking.
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An IP address shows roughly which provider and area you're in, often the city, not your street or name. Only your internet provider can link it to your account, and providers normally share that only with the police under a legal order.
On the same Wi-Fi, yes: every device shares the router's public IP. Each device still has its own private address inside the network, and a phone on mobile data has a different public IP.
Log in to your router (often 192.168.0.1 or 192.168.1.1) and open the connected devices or DHCP list. Every device listed there shares your public IP.
Open this page on the device for its public IP. For the private IP, use ipconfig on Windows or the Wi-Fi details in your phone or Mac settings.
Most home and mobile connections get a dynamic IP, which the provider can change when the router restarts or after a while. A fixed (static) IP is usually a paid extra.
This tool shows your address and doesn't save it.
Check any domain's DNS records online: A, AAAA, CNAME, MX, NS, TXT, SOA and CAA. See where a domain points, its mail servers and its nameservers.
Check the HTTP response headers of any URL: status code, server, caching, Last-Modified, redirects and security headers like HSTS and CSP. Free.
Trace every redirect of a URL: each hop's status code (301, 302, 307, 308), its Location, the server and meta refresh. Find redirect chains and loops.