What Is My IP

To check your public IP and ISP, open a what-is-my-IP tool and read the public IPv4 or IPv6 address, ISP or organization, ASN, and approximate location. This shows the address websites see from your connection. It may not match your private LAN address, such as 192.168.x.x, because NAT hides private addresses behind a public one. If you are using a VPN, the tool will usually show the VPN exit IP and provider instead of your normal ISP. Treat location as approximate.

You can find your public IP without command line by using a web lookup page. It displays the public address seen by the website, often along with ISP, ASN, browser details, and rough location. This is useful for non-technical users, support calls, and quick firewall allowlist checks. Be clear about public versus private IP. Your laptop may show 10.x.x.x or 192.168.x.x locally, while the website shows the public address assigned by your ISP, office firewall, mobile carrier, or VPN provider.

You may have both IPv4 and IPv6 addresses because your network is dual stack. IPv4 is the older 32-bit address system, while IPv6 uses 128-bit addresses and a much larger address space. A website may prefer IPv6 if DNS and connectivity support it, but still use IPv4 for services without IPv6. Seeing both addresses is normal on modern ISPs, mobile networks, and enterprises. For troubleshooting, test both families. A site may work over IPv4 while IPv6 fails due to routing, DNS, or firewall configuration.

A public IP is reachable on the internet, while a private IP is used inside a local network. Common private IPv4 ranges include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Your phone or laptop may have a private address from Wi-Fi, but websites see the public IP after NAT. Public IPs are assigned by ISPs, cloud providers, or network administrators. This difference matters for port forwarding, VPNs, firewall allowlists, and troubleshooting why a service works internally but not from outside.

Your public IP address may change because the ISP uses dynamic assignment, your router renewed its lease, you changed networks, your mobile carrier moved you through another gateway, or you connected to a VPN. Home users often do not have a permanently fixed public IP unless they pay for static service. In offices, the public IP may change after ISP failover or firewall changes. If a firewall allowlist depends on your public IP, confirm whether it is static. Otherwise, expect occasional updates.

Yes, a VPN usually changes your public IP. Websites see the VPN exit server's address instead of the address assigned by your ISP. That is why the displayed ISP, ASN, and location may change when the VPN is connected. If you choose a VPN server in another country, the location lookup will usually follow that exit node. For troubleshooting, always check your IP with the VPN on and off. Many access problems happen because a firewall allowlist expects your normal public IP, not the VPN address.

To check whether your public IP is from a VPN, first view your current public IP, then run it through a VPN or proxy checker. Look at the ASN, provider name, data-center classification, and proxy or VPN flags. If the result shows a hosting provider or known VPN service, the IP is probably not a normal residential ISP address. This is useful when a website blocks access or asks for extra verification. Remember that corporate VPNs and security gateways can also look like proxy traffic even when they are legitimate.