Unable to resolve domain using 1.1.1.1


#1

Hi all,

I have been using 1.1.1.1 as my DNS server for the past few months.
However, this week I was unable to resolve a domain I regularly visit using 1.1.1.1 and the same domain resolves just fine using Google Public DNS (8.8.8.8)

This is the output when I perform an nslookup

C:\Users\carls>nslookup np.edu.sg 1.1.1.1
Server:  one.one.one.one
Address:  1.1.1.1

*** one.one.one.one can't find np.edu.sg: Server failed

C:\Users\carls>nslookup np.edu.sg 8.8.8.8
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
Name:    np.edu.sg
Addresses:  2600:1901:0:8a57::
          35.85.201.130

I have checked and made sure that there is nothing blocking the resolution of the domain in my local network.

Thanks for your time.


#2

Looks like eDNS issues:

http://dnsviz.net/d/np.edu.sg/dnssec/