IP Address Lookup – Instantly Find IP Address Location
Understand what an IP address lookup can and cannot tell you about a visitor’s location, and how the SpeedCheck IP lookup tool works.
IP Address Lookup Basics
An IP address lookup uses geolocation databases to estimate the region, city, and ISP associated with an IP address. These databases are built from routing tables, registry data, and measurement projects. They are useful for fraud detection, content localization, and rough troubleshooting, but they are never perfect.
Results are best understood as approximations rather than precise physical addresses. VPNs, corporate gateways, and mobile networks can all cause many users to appear from the same shared IP, sometimes far from their true location.
Cross‑Checking IP Information with Local Tools
You can compare the output of a web IP lookup with what your own system sees. This is especially helpful when debugging VPN tunnels, proxies, or unusual routing.
Use the following commands to confirm your current public and local IP addresses before and after you connect through different networks.
Combine browser tools with local commands.
ipconfig /all # Local addresses and gateways
nslookup myip.opendns.com resolver1.opendns.com
Use these commands in Terminal.
ifconfig # Local interface addresses
curl https://ifconfig.me # Simple public IP check