When specific websites like shadcn-vue.com and venge.io fail to load on WiFi while mobile data works, the issue is typically a DNS resolution failure rather than a general connectivity problem. Switching to public DNS servers such as Google (8.8.8.8) or Cloudflare (1.1.1.1) often resolves these blockages by bypassing local ISP routing errors or cached negative responses that prevent access to certain domains.
Distinguishing Connectivity from Resolution
The first step in diagnosing this issue is confirming that your device is actually connected to the network but failing to resolve the domain name. You can verify this by pinging an IP address directly if you know one, or by checking if other sites load normally. If generic sites work but these specific ones do not, the network path is open, but the Domain Name System (DNS) lookup is failing. This distinction is crucial because it rules out broader WiFi configuration issues and points directly to how your device translates names into addresses.
Changing DNS Settings on Your Device
Since the default DNS provided by your Internet Service Provider (ISP) may be misconfigured or blocking specific domains, manually setting a public DNS server is the most effective immediate fix. On Android devices, navigate to your WiFi settings, long-press the current network, and select "Modify Network." Change the IP settings from DHCP to Static, then enter 8.8.8.8 as the Primary DNS and 8.8.4.4 as the Secondary DNS. For iOS users, go to Settings, tap WiFi, and select the information icon next to your network. Under "Configure DNS," switch to Manual and add these same addresses, removing any existing entries. Windows users can access the Network Connections panel, right-click their adapter, and modify IPv4 properties to use these public servers. Mac users should go to System Preferences, Network, and adjust the DNS tab similarly.
Clearing Local DNS Cache
Sometimes the issue persists because your operating system has cached a failed resolution attempt. Clearing this cache forces the device to request fresh data from the new DNS server. On Windows, open Command Prompt and run
ipconfig /flushdns. On macOS, open Terminal and execute
dscacheutil -flushcache; sudo killall -HUP mDNSResponder. Linux users may need to restart the systemd-resolved service or clear the nscd cache depending on their distribution. After clearing the cache, try accessing the problematic websites again to see if the connection is restored.
Router-Level Configuration
If changing settings on individual devices is impractical, you can update the DNS settings at the router level. Log into your router’s admin panel, usually via a browser address like
192.168.1.1 or
192.168.0.1. Look for WAN or Internet settings where the DNS fields are located. Replace the automatic DNS assignments with 1.1.1.1 and 8.8.8.8. This change applies to all devices on the network, ensuring consistent resolution across smartphones, laptops, and tablets. Be aware that some routers may require a reboot to apply these changes fully.
Checking for Content Filtering or Blocks
In some cases, the failure to access these sites may be due to content filtering policies enforced by the network administrator, especially in corporate or educational environments. If you are on a public WiFi, check if there are terms of service agreements that restrict certain types of web traffic. Additionally, some antivirus software or security suites installed on your computer may include web protection features that block specific domains. Temporarily disabling these security features can help determine if they are the cause of the blockage. If you suspect a filter, contact your network administrator for clarification.
Alternative Troubleshooting Steps
If switching DNS servers does not resolve the issue, consider other potential causes. Try using a different browser or incognito mode to rule out extension-based blocking. Verify that your system time and date are correct, as incorrect timestamps can cause SSL certificate validation failures that mimic DNS errors. You can also try using a VPN to route your traffic through a different network path, which may bypass regional restrictions or local ISP blocks. If none of these steps work, the issue may be related to the website's own server status or geographic availability. For more insights on maintaining stable connections, you might find
Wifi Connection Keep Switching helpful for understanding how network stability affects overall performance.
Frequently Asked Questions
Why do some websites load on mobile data but not WiFi?
Mobile networks often use different DNS resolvers than home or office WiFi networks. If your local ISP’s DNS is misconfigured or throttling specific domains, mobile data will still work because it uses a separate infrastructure. This discrepancy highlights that the issue is isolated to the local network's name resolution process.
Can I use Cloudflare DNS instead of Google DNS?
Yes, Cloudflare’s DNS servers (1.1.1.1 and 1.0.0.1) are a popular alternative to Google’s servers. They are known for speed and privacy, and many users find them equally effective at resolving blocked or misrouted domains. The setup process is identical to using Google DNS, simply replacing the IP addresses in your network settings.
What if changing DNS doesn’t fix the problem?
If DNS changes fail, the issue might be related to firewall rules, ISP-level blocking, or corrupted network stack files. In such cases, resetting your network adapter drivers or performing a full network reset on your operating system can help restore default behaviors. It is also worth checking if the websites themselves are experiencing downtime.
Is it safe to use public DNS servers?
Using public DNS servers like Google or Cloudflare is generally safe and widely recommended for improved reliability and speed. These providers adhere to strict privacy policies and do not sell your browsing history. However, in highly restricted corporate environments, unauthorized DNS changes might violate IT policies, so always check with your administrator before making changes.
How do I know if my router supports custom DNS?
Most modern consumer routers support custom DNS settings in their advanced configuration panels. If you cannot find the option, consult your router’s manual or manufacturer’s website. Older or basic routers may only allow automatic DNS assignment, in which case you must configure DNS on each individual device connected to the network.