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  <author_name>lumin</author_name>
  <author_url>https://blog.hatena.ne.jp/lumin/</author_url>
  <blog_title>luminのコードメモ</blog_title>
  <blog_url>https://lumin.hatenadiary.org/</blog_url>
  <categories>
    <anon>コード</anon>
  </categories>
  <description>リトルエンディアンでdotlessipを逆引き #!/usr/bin/perl while(){ chomp $_; $_=~s/\s+//g; my $ret=sprintf(&quot;%s.%s.%s.%s&quot;,unpack('CCCC', pack('I',$_))); $ret=~/([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)/; $ret=&quot;$4.$3.$2.$1&quot;; my $host = gethostbyaddr(pack(&quot;C4&quot;, split(/\./, $ret)), 2); print &quot;$host($ret)\n&quot;; }</description>
  <height>190</height>
  <html>&lt;iframe src=&quot;https://hatenablog-parts.com/embed?url=https%3A%2F%2Flumin.hatenadiary.org%2Fentry%2F20040520%2Fp2&quot; title=&quot; dotlessip を 逆引き - luminのコードメモ&quot; class=&quot;embed-card embed-blogcard&quot; scrolling=&quot;no&quot; frameborder=&quot;0&quot; style=&quot;display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;&quot;&gt;&lt;/iframe&gt;</html>
  <image_url></image_url>
  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2004-05-20 00:00:01</published>
  <title> dotlessip を 逆引き</title>
  <type>rich</type>
  <url>https://lumin.hatenadiary.org/entry/20040520/p2</url>
  <version>1.0</version>
  <width>100%</width>
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