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Tech related entries.

IP Classes

Posted on February 17, 2009 by Jianming Li

IP Classes •Default Network 0.0.0.0 •Class A first octet in 1-126. Alone forms net first octet starts with 0 other 3 octets for host half of total ips •Loopback 127.0.0.1 •Class B first octet in 128-191. Together with second octet … Continue reading →

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