http://brandonhutchinson.com/mediawiki/index.php5?title=How_can_I_tell_if_an_IP_address_is_dynamic%3F&action=history&feed=atomHow can I tell if an IP address is dynamic? - Revision history2013-05-20T12:08:40ZRevision history for this page on the wikiMediaWiki 1.11.0rc1http://brandonhutchinson.com/mediawiki/index.php5?title=How_can_I_tell_if_an_IP_address_is_dynamic%3F&diff=1294&oldid=prevHutch: New page: == Overview == Although not a foolproof method, one way to determine if an IP address is dynamic is to look it up in the [http://www.au.sorbs.net/faq/dul.shtml SORBS Dynamic User List and...2008-08-08T20:15:01Z<p>New page: == Overview == Although not a foolproof method, one way to determine if an IP address is dynamic is to look it up in the [http://www.au.sorbs.net/faq/dul.shtml SORBS Dynamic User List and...</p>
<p><b>New page</b></p><div>== Overview ==<br />
<br />
Although not a foolproof method, one way to determine if an IP address is dynamic is to look it up in the [http://www.au.sorbs.net/faq/dul.shtml SORBS Dynamic User List and Host List (DUHL)]. The DUHL contains most netblocks of dynamically-assigned addresses by ISPs.<br />
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== Example ==<br />
<br />
As an example, I'll determine if 24.245.33.165 is a dynamic IP by looking it up in the SORBS DUHL.<br />
<br />
* ''dig'' method:<br />
$ '''dig +short 165.33.245.24.dul.dnsbl.sorbs.net'''<br />
127.0.0.10<br />
<br />
* ''nslookup'' method:<br />
nslookup 165.33.245.24.dul.dnsbl.sorbs.netNon-authoritative answer:<br />
Name: 165.33.245.24.dul.dnsbl.sorbs.net<br />
Address: 127.0.0.10<br />
<br />
A result of 127.0.0.10 indicates it is in the SORBS DUHL list.</div>Hutch