Could Not Resolve Host github.com

Though I have the same problem that is in this question, But I am facing another problem i.e, even https://github.com/ is not running in the browser and showing that this webpage is not available and this happens after I installed Heroku.

Cannot access github from terminal and not even from browser.

After diagnosis I get to know that this problem is related to my WiFi because when I try to open https://github.com/ in mobile using mobile data, It is opening but when I connect my mobile to WiFi then same problem i.e, this webpage is not available and when I use mobile data internet in my laptop I am able to access the site but when using WiFi this webpage is not available.

I am running Ubuntu(Linux), dual boot with Windows-7

Diagnosis Results:

@Aroll605

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=57 time=144 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=57 time=71.4 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=57 time=192 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=57 time=112 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=57 time=137 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=57 time=58.0 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=57 time=83.6 ms
64 bytes from 8.8.8.8: icmp_seq=8 ttl=57 time=104 ms
64 bytes from 8.8.8.8: icmp_seq=9 ttl=57 time=128 ms

@epascarello

unknown host 192.30.252.131

Answers:

Answer

This definately looks like a DNS issue, you can access sites via IP but not through the URL.

You need to configure your routers DNS settings, personally I would set them to Google's DNS servers

8.8.8.8 (primary)
8.8.4.4 (secondary)

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