Layer 2 vs. Layer 3 Connection Breakdown
The 'Connected, No Internet' status is a classic symptom of a breakdown between the **Link Layer** and the **Network/Transport Layers**. Your computer’s wireless radio is actively communicating with the router’s antennas. The router has assigned your device an internal IP address (like 192.168.1.15). However, when your system attempts to send a test packet to Microsoft or Google to verify internet status, the route fails.
In over 60% of cases, the bottleneck is a dead **Domain Name System (DNS)** resolver. If your ISP’s local DNS servers crash, your browser can no longer map friendly URLs (like google.com) to their numeric hosting servers. By manually redirecting your network settings to public DNS clusters like Cloudflare or Google, you bypass these ISP bottlenecks completely.
- Is your DNS query resolving? Run a live query on our Global DNS Propagation Checker.
- Learn how to resolve port blocks with our Port Checker Utility.
- Verify your device IP configuration with the Public IP Checker Tool.