Como saber meu IP publico
Descubra seu IP publico. IP publica vs privada, IPv4 vs IPv6.
What is an IP address and how it works
An IP address (Internet Protocol) is a unique number identifying your device on a network. It works like your computer's postal address.
IPv4: Classic format: 192.168.1.100. Only 4.3 billion addresses — exhausted in 2011.
IPv6: New format: 2001:0db8:85a3::8a2e:0370:7334. 340 undecillion addresses — enough for every atom on Earth.
Discover your IP now with the NexTools IP tool.
Public IP vs private IP: what is the difference
Public IP: Assigned by your ISP. Visible to every website you visit. Like your building number.
Private IP: Assigned by your router to each device (192.168.x.x, 10.x.x.x). Like your apartment number — only visible inside.
NAT: Your router translates between private and public IPs. That's why 10 devices share one public IP.
What information your public IP reveals
Your public IP reveals:
- Approximate location: City and country, 80-90% accuracy.
- ISP: Identifiable by assigned IP ranges.
- Connection type: Residential, business, mobile, VPN/proxy.
What it does NOT reveal: Your name, exact address, browsing history, or personal files. However, with a court order, your ISP can link your IP to your account.
Check what your IP exposes with the NexTools tool. For encoding sensitive data, use the Base64 encoder.
Dynamic IP vs static IP
Dynamic (most users): ISP assigns different IP periodically. Cheaper for ISPs.
Static (servers, businesses): Same IP always. Needed for web servers, business VPNs. Extra cost ($5-20/month).
How to check: Note your IP with NexTools, restart router, check again. If changed, it's dynamic.
How to protect your privacy with VPN and proxy
VPN: Encrypts traffic through an intermediate server. Sites see VPN's IP, not yours. 2026 options: Mullvad ($5/mo, verified no-logs), ProtonVPN (free limited), NordVPN ($3-5/mo).
Tor: Routes through 3 random nodes. Maximum anonymity but very slow.
Proxy: Simpler intermediary. Doesn't encrypt traffic.
DNS over HTTPS: Encrypts DNS queries. Prevents ISP from seeing which sites you visit.
Practical uses of knowing your public IP
1. Remote access: Security cameras, NAS, home server.
2. Network diagnostics: Unexpected IP change = router restart or ISP issue.
3. Firewall config: Whitelist your IP for server access.
4. VPN verification: Check IP before/after VPN to confirm it works.
5. Geolocation testing: Verify geo-targeted content works correctly.
Also check the currency converter for international work.
How to find your private IP on each OS
Windows: ipconfig → "IPv4 Address"
Mac: System Preferences → Network. Or: ifconfig | grep inet
Linux: ip addr show or hostname -I
iPhone: Settings → WiFi → (i) next to network.
Android: Settings → WiFi → tap network → Details.
For public IP: Visit NexTools what-is-my-ip or Google "what is my ip."
The future: IPv6 and IPv4 exhaustion
IPv4 exhausted in 2011. Remaining addresses managed via NAT and IP markets (~$500K for a /16 block in 2026).
IPv6 adoption 2026: ~45% of global traffic. India leads 70%+, US ~50%, Europe ~40%, LATAM ~25%.
Why it matters: IPv6 eliminates NAT (every device gets a unique global IP), improves performance, and enables IoT.
For web development, verify your site works on IPv6. Use the hash tool to verify network config integrity.
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Can someone hack me just with my public IP
Not directly. Your IP alone doesn't give access to your computer. However, it allows port scanning, DDoS attacks, or exploiting exposed services. Protection: keep router updated, don't expose unnecessary services, use firewall.
Does my public IP change every time I connect
Depends on ISP and connection type. Dynamic IP (most): changes every 24h or on router restart. Static (businesses): never changes.
What is the difference between IPv4 and IPv6
IPv4: numeric format (192.168.1.1), 4.3 billion addresses (exhausted). IPv6: hexadecimal (2001:db8::1), 340 undecillion addresses. IPv6 also improves security and performance.
Does a VPN really hide my IP
Yes. A VPN replaces your public IP with the VPN server's. However, your VPN provider knows your real IP, so choose one with verified no-logs policy.
Can I change my public IP manually
Not directly — assigned by ISP. Options: restart router (sometimes works with dynamic IP), use VPN, or request different static IP from ISP.
Why do different sites show different locations for my IP
IP geolocation databases aren't perfect. Each service maintains its own. Typical accuracy: 80-90% at city level, less in rural areas.