Because public IP addresses are tied to the router’s connection to the ISP, joining a different Wi‑Fi network usually results in a new public IP. How Wi‑Fi Connections Influence IP Changes Connecting to a new Wi‑Fi network often triggers a renegotiation of your device’s network configuration.
How Router Restarts Affect Your Public and Private IP Addresses
Mobile data and VPNs can mask or alter your perceived IP address entirely. Most routers assign addresses dynamically, meaning a device could receive a new private IP upon reconnecting, but this only affects how the device is recognized locally, not its public identity.
Home networks typically use dynamic public IPs that change periodically. This address is what websites and online services see when you browse.
How Router Restarts Can Trigger an IP Address Change
Why These Changes Matter for Privacy and Access Frequent IP changes can enhance your privacy by making it harder for trackers to build a consistent profile based on a single address. A public IP address is assigned by your internet service provider and identifies your connection to the broader internet, whereas a private IP address is used within your local network to communicate with devices like laptops, phones, and printers.
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