What Is My IP Address
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Your public IP address is the unique identifier your ISP assigns to your internet connection. Every device on your home network typically shares a single public IP — your router receives it from your ISP, while internal devices get private IPs (192.168.x.x) via DHCP.
Private IP ranges (RFC 1918: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) are not routable on the public internet. NAT bridges the gap: your router translates all private-IP traffic to its public IP. IPv6 provides enough addresses for every device to have a globally routable address, eliminating the need for NAT.
ISPs use DHCP to assign IP addresses. Most residential customers receive a dynamic IP that may change when the router restarts. Businesses pay for static IPs essential for hosting servers and VPNs. Mobile carriers use Carrier-Grade NAT (CGNAT), meaning thousands of users may share a single public IP simultaneously.
Your IP can reveal your approximate location — typically city or region, not your exact street address. It identifies your ISP and country. Geolocation databases map IP ranges based on routing data and ISP agreements. Your name or exact address cannot be revealed without a legal request to your ISP.
IPv4 (32-bit, ~4.3 billion addresses) was exhausted around 2011. IPv6 (128-bit, 340 undecillion addresses) is virtually unlimited. Most modern ISPs support dual-stack. If you see an IPv6 address above, your ISP has deployed modern addressing. IPv6 also improves routing efficiency and eliminates most NAT requirements.
Every website you visit logs your IP, enabling cross-session tracking. A VPN routes your traffic through a server so websites see the provider's IP instead of yours. Tor routes through multiple relays for further anonymity. However, browser fingerprinting and DNS leaks can still reveal your identity even with these tools.
Does my IP address change?
Most residential ISPs assign dynamic IPs that can change when your router restarts or after a lease renewal. Static IPs require a special plan with your ISP.
Can someone find my exact location from my IP?
No — IP geolocation is approximate, typically accurate to city or region. ISPs know the exact subscriber, but accessing that requires a legal request.
What is NAT?
Network Address Translation allows multiple devices on a private network to share a single public IP. Your router translates outgoing traffic and routes incoming responses to the correct internal device.
Why do I see different IPs on different websites?
Some websites detect both IPv4 and IPv6 addresses. If your ISP supports dual-stack, different sites may show different versions of your address.
Is my IP address personal data?
Under GDPR and similar privacy laws, IP addresses are considered personal data because they can be linked to an individual with ISP records.