IP Lookup Guide: Find IP Address Location
Where is a website visitor from? Which city does that server log IP belong to? IP lookup answers in one second. Try DevToolbox IP Lookup.
RFC 791 — Internet ProtocolRFC Standards
📌 Key Takeaways
- IP Lookup Guide: Find IP Address Location is widely used by developers
- Based on RFC standards and real-world experience
- Free online tools, runs locally, no data upload
- FAQ section at the bottom answers common questions
📌 Key Takeaways
- IP Lookup Guide: Find IP Address Location is widely used by developers
- Based on RFC standards and real-world experience
- Free online tools, runs locally, no data upload
- FAQ section at the bottom answers common questions
What Can You Find?
- Country/province/city
- ISP (Internet Service Provider)
- Latitude/longitude
- Proxy/VPN detection
Two Common Tools
- My IP: check your own public IP
- IP Lookup: look up any IP
Summary
Online IP lookup, no CLI needed.
Related: IP Lookup
FAQ: Common Questions
Q: How to check where the IP address belongs?
Use the DevToolbox IP Lookup tool. You can also use the command line `curl ipinfo.io/8.8.8.8` or `nslookup IP`. In China, there are ip.cn, ip138.com, etc.
Q: Is IP location query accurate?
It's about 80% accurate at the city level, 100% accurate at the carrier level, and almost 100% at the national level. But the VPN/Proxy user's home location shows the proxy server location, not the real location.
Q: What is the difference between IPv4 and IPv6?
IPv4 uses 32-bit addresses (about 4.3 billion, exhausted in 2011), and IPv6 uses 128-bit addresses (3.4×10^38). IPv6 is faster and more secure, but requires ISP and website support.