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	<title>运维部落 &#187; ipv4</title>
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		<title>IPv4网络掩码对照表</title>
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		<pubDate>Fri, 20 Jul 2012 17:58:03 +0000</pubDate>
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				<category><![CDATA[Linux]]></category>
		<category><![CDATA[ipv4]]></category>
		<category><![CDATA[vps12.com]]></category>
		<category><![CDATA[台湾vps]]></category>
		<category><![CDATA[日本vps]]></category>
		<category><![CDATA[美国vps]]></category>
		<category><![CDATA[香港vps]]></category>

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		<description><![CDATA[序号 子网掩码 CIDR 总IP数 可用IP数 C网子网数 1 255.255.255.255 /32 1 1 1/256 2 255.255.255.254 /31 2 0 1/128 3 255.255.255.252 /30 4 2 1/64 4 255.255.255.248 /29 8 6 1/32 5 255.255.255.240 /28 16 14 1/16 6 255.255.255.224 /27 32 30 1/8 7 255.255.255.192 /26 64 62 1/4 8 255.255.255.128 /25 128 126 1/2 9 [...]]]></description>
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