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Multiple DNS servers are suddenly not responding to queries?

Member
Posts: 1
Registered: ‎11-07-2018

Since a few days ago, I found out that websites are not resolving when using Quad9 DNS (9.9.9.9). Upon further testing, it seems that several other DNS servers are also not responding to queries. Why is this? Both my Prepaid LiVE and Postpaid Infinite 150 SIMs are affected.

 

Below screenshots show that DNS servers 8.8.8.8, 8.8.4.4, 1.1.1.1, and 208.67.222.222 are working but 1.0.0.1, 9.9.9.9, 149.112.112.112, and 208.67.220.220 are not.

 

Please help me with this.

 

dns1.PNG

dns2.PNG

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Re: Multiple DNS servers are suddenly not responding to queries?

Contributor
Posts: 50
Registered: ‎25-04-2017

I'm on Infinite 150 and only Google, OpenDNS and CloudFlare works for me.

This is actually not a bad thing. The reason why the ISP blocks lesser known public DNS servers is a pre-emptive security measure.

 

If they allow any public DNS servers especially the lesser known ones, it'll pose serious security threats to the network such as malicious IP redirection, etc.

 

Should you need to bypass geo restricted content, try using a VPN instead.

 

Fastest response: CloudFlare

If you have Android devices connected to your hotspot, always use Google DNS as one of the backup DNs server.

For other devices such as Desktop PCs and TV Box, use OpenDNS.