many thanks
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How to find sub domains
How can I discover all the DNS entried for a domain.
We have a domain with various sub domains, such as name.domain.com.au
Is there a easy way to list of all these and their IP's and record types such as MX or A records.
I am refering to external routable domains not domains within our firewall.
We add sub domains all the time so if there is a easy way to do this via a web page or somehting that would be great.
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by: NopiusPosted on 2007-07-23 at 22:14:01ID: 19553615
> We have a domain with various sub domains, such as name.domain.com.au
Where this domain is hosted (I mean DNS server)?
> Is there a easy way to list of all these and their IP's and record types such as MX or A records.
That's possible ONLY If DNS server configuration allows this. Typically subdomain queries are allowed only for slave domain servers or for group of specially defined clients of that server.
> We add sub domains all the time so if there is a easy way to do this via a web page or somehting that would be great.
Ask your domain hosting provider to allow AXFR queries from your IP addresses. If they have a 'bind' nameserver, this can be done with named.conf option 'allow-transfer { your.firewall.ip.address; ... };'. Without this option you are unable to perform recursive queries.
With this option and _TCP_ port 53 opened you may do:
# nslookup
> server x.x.x.x
> ls -l domain.com.au
Where server x.x.x.x is your provider's DNS that have allow-transfer enabled for you.