Public vs Private IP Address: Complete Guide
Public IP Address
Your public IP is assigned by your ISP and visible to every website, service, and tracker on the internet. It reveals your city, country, ISP, and connection type.
Check yours now: Instant IP Lookup →
Private IP Address
Your private IP is used only inside your local network (home, office). It's assigned by your router and never seen externally. Common ranges:
192.168.0.0 – 192.168.255.255(most home routers)10.0.0.0 – 10.255.255.255(corporate networks)172.16.0.0 – 172.31.255.255(cloud/enterprise)
Key Differences
- Visibility: Public = global internet. Private = local network only
- Uniqueness: Public = globally unique. Private = reused across millions of networks
- Assignment: Public = ISP. Private = router/DHCP
- Tracking risk: Public = high (advertisers, ISPs, governments). Private = none externally
Why This Matters for Privacy
Websites cannot see your private IP. But your public IP alone is enough to build detailed profiles combining location, ISP, browsing history, and device fingerprinting.
Run our Privacy Risk Assessment →
How to Check Both IPs
- Public: Visit myipaddresschecker.com/whats-my-ip.php
- Private (Windows): Command Prompt →
ipconfig - Private (Mac): System Settings → Network → Details
- Private (iPhone): Settings → Wi-Fi → ⓘ
Can someone hack me through my private IP?
No. Private IPs aren't routable on the internet. Attacks target your public IP or exploit vulnerabilities in exposed services.