| [582] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> | 
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|  | 2 | <html> | 
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|  | 3 | <head> | 
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|  | 4 | <title>IP Database Reverse DNS Help</title> | 
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|  | 5 | <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> | 
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|  | 6 | <link rel="stylesheet" type="text/css" href="ipdb.css"> | 
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|  | 7 | <link rel="stylesheet" type="text/css" href="local.css"> | 
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|  | 8 | </head> | 
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|  | 9 | <body> | 
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|  | 10 |  | 
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|  | 11 | <p> | 
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|  | 12 | The IP Database can pass reverse DNS information back and forth to a DNS management backend to simplify | 
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|  | 13 | maintenance of the reverse DNS records associated with the IPs being managed.</p> | 
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|  | 14 |  | 
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|  | 15 | <p>Several shortcuts can be used when specifying a pattern for an IPv4 netblock, which will be expanded to | 
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|  | 16 | actual DNS records by the DNS management system.</p> | 
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|  | 17 |  | 
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|  | 18 | <table class="regular" cellspacing="1" cellpadding="1" bgcolor="#000000"> | 
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|  | 19 | <tr class="header"><td></td><td>Substitution pattern</td><td>Example expansion using 192.168.23.45</td></tr> | 
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|  | 20 |  | 
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|  | 21 | <tr class="header"><td colspan="3">Whole-IP patterns</td></tr> | 
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|  | 22 | <tr class="row0"><td>Dashed IP</td><td>%i</td><td>192-168-23-45</td></tr> | 
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|  | 23 | <tr class="row1"><td>Reverse dashed IP</td><td>%r</td><td>45-23-168-192</td></tr> | 
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|  | 24 | <tr class="row0"><td>Hex-coded IP</td><td>%h</td><td>c0a8172d</td></tr> | 
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|  | 25 | <tr class="row1"><td>Decimal IP</td><td>%d</td><td>323241453</td></tr> | 
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|  | 26 |  | 
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| [649] | 27 | <tr class="header"><td colspan="3">Per-octet patterns (1, 2, 3, or 4 specify the octet;  d, h or 0 | 
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|  | 28 | specify decimal, hexidecimal, or 0-padded decimal)</td></tr> | 
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| [582] | 29 | <tr class="row0"><td>First octet, decimal</td><td>%1d</td><td>192</td></tr> | 
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|  | 30 | <tr class="row1"><td>Third octet, 0-padded</td><td>%30</td><td>023</td></tr> | 
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|  | 31 | <tr class="row0"><td>Fourth octet, hexidecimal</td><td>%4h</td><td>2d</td></tr> | 
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|  | 32 | <tr class="row1"><td>All octets, different expansions</td><td>%1h-%2d-%30-%4h</td><td>c0-168-023-2d</td></tr> | 
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|  | 33 |  | 
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|  | 34 | </table> | 
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|  | 35 |  | 
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| [649] | 36 | <p> %i and %r also allow explicitly defining the separator; eg %.i | 
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|  | 37 | or %_r. '.', '-', and '_' are the only characters<br> | 
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|  | 38 | supported since DNS names may not contain most other | 
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|  | 39 | non-alphanumerics.</p> | 
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|  | 40 |  | 
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| [582] | 41 | </body></html> | 
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