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IPv4 network addressing cheat sheet, with CIDR notation, number of addresses, and masks.

{{{
CIDR Total number Network Description:
Notation: of addresses: Mask:
--------------------------------------------------------------
/0 4,294,967,296 0.0.0.0 Every Address
/1 2,147,483,648 128.0.0.0 128 /8 nets
/2 1,073,741,824 192.0.0.0 64 /8 nets
/3 536,870,912 224.0.0.0 32 /8 nets
/4 268,435,456 240.0.0.0 16 /8 nets
/5 134,217,728 248.0.0.0 8 /8 nets
/6 67,108,864 252.0.0.0 4 /8 nets
/7 33,554,432 254.0.0.0 2 /8 nets
/8 16,777,214 255.0.0.0 1 /8 net
--------------------------------------------------------------
/9 8,388,608 255.128.0.0 128 /16 nets
/10 4,194,304 255.192.0.0 64 /16 nets
/11 2,097,152 255.224.0.0 32 /16 nets
/12 1,048,576 255.240.0.0 16 /16 nets
/13 524,288 255.248.0.0 8 /16 nets
/14 262,144 255.252.0.0 4 /16 nets
/15 131.072 255.254.0.0 2 /16 nets
/16 65,536 255.255.0.0 1 /16
--------------------------------------------------------------
/17 32,768 255.255.128.0 128 /24 nets
/19 16,384 255.255.192.0 64 /24 nets
/19 8,192 255.255.224.0 32 /24 nets
/20 4,096 255.255.240.0 16 /24 nets
/21 2,048 255.255.248.0 8 /24 nets
/22 1,024 255.255.252.0 4 /24 nets
/23 512 255.255.254.0 2 /24 nets
/24 256 255.255.255.0 1 /24
--------------------------------------------------------------
/25 128 255.255.255.128 Half of a /24
/26 64 255.255.255.192 Fourth of a /24
/27 32 255.255.255.224 Eighth of a /24
/28 16 255.255.255.240 1/16th of a /24
/29 8 255.255.255.248 5 Usable addresses
/30 4 255.255.255.252 1 Usable address
/31 2 255.255.255.254 Unusable
/32 1 255.255.255.255 Single host
--------------------------------------------------------------
}}}
----
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I'm a 37 years old and work at the college (Industrial and Labor Relations).
In my free time I'm trying to learn English. I've been there and look forward to go there sometime near future. I love to read, preferably on my ebook reader. I like to watch Breaking Bad and Supernatural as well as documentaries about anything astronomical. I enjoy Games Club - Dungeons and Dragons, Monopoly, Etc..

Also visit my web site ... photoshop cs6 serial number generator

SamatsWiki: CheatSheet/IPv4CIDRNotation (last edited 2013-07-17 23:02:03 by SamatJain)