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Check your IP instantly - 4 languages
What is IP Check-san?
IP Check-san is a free set of network check tools that shows how your device appears from the internet. The dashboard displays your public IP address the moment it loads, together with an approximate GeoIP location and the browser and network details that any website can read from an ordinary visit. Nothing needs to be installed and no account is required; the displayed data is not stored on the server.
Beyond the dashboard, the connection quality test measures round-trip latency from your browser to servers in 34 cities worldwide and adds a simple upload speed measurement, so you can tell whether a slow page is caused by your own line or by the distance to the server. When an unfamiliar term comes up, the glossary explains 130 networking and security terms in plain language, and the article library takes a deeper look at topics such as IPv4 and IPv6, NAT, DNS, VPN, and online privacy.
Explore the site
- IP address check - your IP address, location estimate, and browser details at a glance
- Connection quality test - latency to 34 cities plus an upload speed check
- Glossary - 130 terms on IP, DNS, VPN, and security across 12 categories
- Articles - in-depth guides on IP addresses, privacy, and network troubleshooting
- About this site - what IP Check-san does and how the displayed data is handled
Every page is available in Japanese, English, Chinese, and Spanish. Pick a language above to get started; your choice is remembered on your next visit.