Open the Command Prompt . Type ipconfig /all and press Enter . Look for the DNS Servers entry to check your DNS settings and verify that they are correct. If you don't see the correct DNS servers, double check your DNS settings in the Network and Sharing Center. Type nslookup lifewire.com and press Enter .
Anything to do with TCP/IP is locked away from the user on the gateway. Instead, change the DNS settings on your client (s). Whether you're on a Mac or PC, you can go to the network settings and enter the DNS settings you want. I suggest that you get a real router between the T-Mobile gateway and your devices.
To Add: Syntax: netsh interface ipv4 add dnsserver "Network Interface Name" dns.server.ip index=1 (for primary)2 (for secondary) Eg: netsh interface ipv4 add dnsserver "Ethernet" 8.8.8.8 index=1. netsh interface show interface. 8.8.8.8 is Google's recursive DNS server, use it, if your's not working.
Click the Yes button on the User Access Control popup. In the Command Prompt window, type or copy-paste the following command and press the Enter key. Replace Preferred DNS with the primary DNS address of your preferred server. netsh interface ipv4 set dnsservers Wi-Fi Static Preferred DNS primary.
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