Recursive Queries on 173.245.58.195 and 173.245.59.153

Hi

I used[https:https://intodns.com/ to check my DNS
I am getting errors regarding Recursive queries (bellow):

Recursive Queries
I could use the nameservers listed below to performe recursive queries. It may be that I am wrong but the chances of that are low. You should not have nameservers that allow recursive queries as this will allow almost anyone to use your nameservers and can cause problems. Problem record(s) are:
173.245.58.195
173.245.59.153

A search on this forum found this post about exactly the same problem:
https://community.cloudflare.com/t/recursive-queries-for-domain/8050

In the above post it was suggested that the result is not accurate, and to try a different site, http://openresolver.com/?ip=173.245.59.153

However the openresolver site is still giving an error:

Open recursive resolver detected on 173.245.59.153

IP address 173.245.59.153 is vulnerable to DNS Amplification attacks.

What is going on? Is this a issue? Can I fix it?

Many thanks for your help Dave.

In short:
Nothing to bei worried about as this is Cloudflare’s ‘issue’, not yours. Try to resovle something against this servers :slight_smile:

I am pretty sure that they have secured their servers as best as possible.

Can you try another other test?

http://openresolver.com/ incorrectly reports that Cloudflare’s authoritative DNS servers are “open recursive resolvers” as a false positive – it tests by sending a query for test.openresolver.com, which Cloudflare responds positively (but authoritatively) to because openresolver.com is in fact hosted on Cloudflare!

openresolver.com.       86400   IN      NS      lloyd.ns.Cloudflare.com.
openresolver.com.       86400   IN      NS      vita.ns.Cloudflare.com.
1 Like

Ok teen nothing to worry about.
Thanks for the replies.

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