Replying to my own post... Problem was with our ISP. Resolved now . On Mon., 12 Aug. 2019, 17:42 Malcolm Faed, <malcolm@avcomm.com.au> wrote:

Hi all,

Sorry in advance for the partial MT post, but I am hoping someone can assist.

We have our own AS and an IP range routed through a MT. Clients connected to our IP range are receiving 'query refused' from a NS lookup using google DNS 8.8.8.8.

Other DNS servers (8.8.4.4 / 1.1.1.1 / 9.9.9.9) etc work fine.

For the router itself and NAT I use 9.9.9.9 so never noticed until clients started connecting.

Is there anything special I need to do to use Googles DNS via our IP range?

Below is a debug log from Windows nslookup.

Thanks in advance for any clues.

Cheers, Mal

======================

C:\Users\Mal>nslookup -debug avcomm.com.au ------------ Got answer: HEADER: opcode = QUERY, id = 1, rcode = REFUSED header flags: response, want recursion questions = 1, answers = 0, authority records = 0, additional = 0

QUESTIONS: 8.8.8.8.in-addr.arpa, type = PTR, class = IN

------------ Server: UnKnown Address: 8.8.8.8

------------ Got answer: HEADER: opcode = QUERY, id = 2, rcode = REFUSED header flags: response, want recursion questions = 1, answers = 0, authority records = 0, additional = 0

QUESTIONS: avcomm.com.au, type = A, class = IN

------------ ------------ Got answer: HEADER: opcode = QUERY, id = 3, rcode = REFUSED header flags: response, want recursion questions = 1, answers = 0, authority records = 0, additional = 0

QUESTIONS: avcomm.com.au, type = AAAA, class = IN

------------ ------------ Got answer: HEADER: opcode = QUERY, id = 4, rcode = REFUSED header flags: response, want recursion questions = 1, answers = 0, authority records = 0, additional = 0

QUESTIONS: avcomm.com.au, type = A, class = IN

------------ ------------ Got answer: HEADER: opcode = QUERY, id = 5, rcode = REFUSED header flags: response, want recursion questions = 1, answers = 0, authority records = 0, additional = 0

QUESTIONS: avcomm.com.au, type = AAAA, class = IN

------------ *** UnKnown can't find avcomm.com.au: Query refused

*Malcolm Faed*Network Broadcast Engineer malcolm@avcomm.com.au

Av-Comm

Office: +61 2 9939 4377 Mobile+61 424 957 053

Unit 24 / 9 Powells Road, Brookvale, NSW 2100, Australia. avcomm.com.au

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