DNS: Difference between revisions
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* [http://www.zytrax.com/books/dns/ch8/ zytrax open — Chapter 8. DNS Resource Records (RRs)] |
* [http://www.zytrax.com/books/dns/ch8/ zytrax open — Chapter 8. DNS Resource Records (RRs)] |
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== How-to == |
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=== Reverse DNS lookup === |
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Use option <code>-x</code> of ''dig'' command: |
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<source lang=bash> |
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dig +short -x 82.78.227.176 |
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# 176.176-191.227.78.82.in-addr.arpa. |
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# ivorde.ro. |
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</source> |
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Or query record <code>PTR</code> in <code>in-addr.arpa</code> domain: |
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<source lang=bash> |
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dig +short ptr 176.227.78.82.in-addr.arpa. |
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# 176.176-191.227.78.82.in-addr.arpa. |
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# ivorde.ro. |
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</source> |
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Revision as of 19:56, 7 June 2016
References
- A DNS database consists of one or more zone files used by the DNS server. Each zone holds a collection of structured resource records, the following of which are supported by the DNS Server service.
- How DNS works.
- Detailed explanations on how DNS work, applied to Linux.
How-to
Reverse DNS lookup
Use option -x of dig command:
dig +short -x 82.78.227.176
# 176.176-191.227.78.82.in-addr.arpa.
# ivorde.ro.
Or query record PTR in in-addr.arpa domain:
dig +short ptr 176.227.78.82.in-addr.arpa.
# 176.176-191.227.78.82.in-addr.arpa.
# ivorde.ro.