Re: [bitfolk] IPv4 reverse DNS

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Author: Andy Smith
Date:  
To: users
Subject: Re: [bitfolk] IPv4 reverse DNS

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gpg: Signature made Tue Apr 12 11:46:03 2022 UTC
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gpg: aka "Andrew James Smith <andy@strugglers.net>" [unknown]
gpg: aka "Andy Smith (UKUUG) <andy.smith@ukuug.org>" [unknown]
gpg: aka "Andy Smith (BitFolk Ltd.) <andy@bitfolk.com>" [unknown]
gpg: aka "Andy Smith (Linux User Groups UK) <andy@lug.org.uk>" [unknown]
gpg: aka "Andy Smith (Cernio Technology Cooperative) <andy.smith@cernio.com>" [unknown]
Hello,

On Tue, Apr 12, 2022 at 12:17:01PM +0100, Keith Williams wrote:
> I made the changes you suggested and here is the result


$ for ns in 1 2 3; do target="ns${ns}.keiths-place.co.uk"; echo "$target:"; dig +noall +answer +comments -x 85.119.84.35 @$target | sed 's/^/\t/'; done
ns1.keiths-place.co.uk:
        ;; Got answer:
        ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41003
        ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
        ;; WARNING: recursion requested but not available


        ;; OPT PSEUDOSECTION:
        ; EDNS: version: 0, flags:; udp: 4096


ns2.keiths-place.co.uk:
        ;; Got answer:
        ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12971
        ;; flags: qr aa rd; QUERY: 1, ANSWER: 16, AUTHORITY: 0, ADDITIONAL: 1
        ;; WARNING: recursion requested but not available


        ;; OPT PSEUDOSECTION:
        ; EDNS: version: 0, flags:; udp: 1232
        ;; ANSWER SECTION:
        35.84.119.85.in-addr.arpa. 600  IN      PTR     mail.wingravegolf.co.uk.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     leightonbuzzard.net.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     splog.keiths.space.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     newportpagnell.net.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     ns1.keiths-place.co.uk.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     webmail.wingravegolf.co.uk.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     aakanee.com.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     www.keiths.space.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     www.keynesmail.com.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     mx10.keynesmail.com.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     www.leightonbuzzard.net.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     keiths.space.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     www.aakanee.com.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     webmail.keynesmail.com.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     www.newportpagnell.net.
        35.84.119.85.in-addr.arpa. 600  IN      PTR     keynesmail.com.


ns3.keiths-place.co.uk:
        ;; Got answer:
        ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 55445
        ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
        ;; WARNING: recursion requested but not available


        ;; OPT PSEUDOSECTION:
        ; EDNS: version: 0, flags:; udp: 1232


Or to put it another way:

    http://dns.squish.net/traverses/aa62a2ab37d593a69cc9dca907f499c4


Cheers,
Andy

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