Difference between revisions of "CICR"

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(New page: Category:Engineering <table> <tr> <th>CIDR prefix</th> <th>dotted decimal<br> netmask</th> <th>hex netmask</th> <th>inverse mask</th> <th>number of<br> classfull<br> networks</th> <th...)
 
m (Cidr moved to CICR)
 
(One intermediate revision by the same user not shown)
Line 19: Line 19:
 
<td>80 00 00 00</td>
 
<td>80 00 00 00</td>
 
<td>127.255.255.255</td>
 
<td>127.255.255.255</td>
<td>128 as</td>
+
<td>128 As</td>
 
<td align="right">2,147,483,646</td>
 
<td align="right">2,147,483,646</td>
 
</tr>
 
</tr>
Line 27: Line 27:
 
<td>c0 00 00 00</td>
 
<td>c0 00 00 00</td>
 
<td>63.255.255.255</td>
 
<td>63.255.255.255</td>
<td>64 as</td>
+
<td>64 As</td>
 
<td align="right">1,073,741,822</td>
 
<td align="right">1,073,741,822</td>
 
</tr>
 
</tr>
Line 35: Line 35:
 
<td>e0 00 00 00</td>
 
<td>e0 00 00 00</td>
 
<td>31.255.255.255</td>
 
<td>31.255.255.255</td>
<td>32 as</td>
+
<td>32 As</td>
 
<td align="right">536,870,910</td>
 
<td align="right">536,870,910</td>
 
</tr>
 
</tr>
Line 43: Line 43:
 
<td>f0 00 00 00</td>
 
<td>f0 00 00 00</td>
 
<td>15.255.255.255</td>
 
<td>15.255.255.255</td>
<td>16 as</td>
+
<td>16 As</td>
 
<td align="right">268,435,454</td>
 
<td align="right">268,435,454</td>
 
</tr>
 
</tr>
Line 51: Line 51:
 
<td>f8 00 00 00</td>
 
<td>f8 00 00 00</td>
 
<td>7.255.255.255</td>
 
<td>7.255.255.255</td>
<td>8 as</td>
+
<td>8 As</td>
 
<td align="right">134,217,726</td>
 
<td align="right">134,217,726</td>
 
</tr>
 
</tr>
Line 59: Line 59:
 
<td>fc 00 00 00</td>
 
<td>fc 00 00 00</td>
 
<td>3.255.255.255</td>
 
<td>3.255.255.255</td>
<td>4 as</td>
+
<td>4 As</td>
 
<td align="right">67,108,862</td>
 
<td align="right">67,108,862</td>
 
</tr>
 
</tr>
Line 67: Line 67:
 
<td>fe 00 00 00</td>
 
<td>fe 00 00 00</td>
 
<td>1.255.255.255</td>
 
<td>1.255.255.255</td>
<td>2 as</td>
+
<td>2 As</td>
 
<td align="right">33,554,430</td>
 
<td align="right">33,554,430</td>
 
</tr>
 
</tr>
Line 75: Line 75:
 
<td>ff 00 00 00</td>
 
<td>ff 00 00 00</td>
 
<td>0.255.255.255</td>
 
<td>0.255.255.255</td>
<td>1 a or 256 bs</td>
+
<td>1 A or 256 Bs</td>
 
<td align="right">16,777,214</td>
 
<td align="right">16,777,214</td>
 
</tr>
 
</tr>
Line 83: Line 83:
 
<td>ff 80 00 00</td>
 
<td>ff 80 00 00</td>
 
<td>0.127.255.255</td>
 
<td>0.127.255.255</td>
<td>128 bs</td>
+
<td>128 Bs</td>
 
<td align="right">8,388,606</td>
 
<td align="right">8,388,606</td>
 
</tr>
 
</tr>
Line 91: Line 91:
 
<td>ff c0 00 00</td>
 
<td>ff c0 00 00</td>
 
<td>0.63.255.255</td>
 
<td>0.63.255.255</td>
<td>64 bs</td>
+
<td>64 Bs</td>
 
<td align="right">4,194,302</td>
 
<td align="right">4,194,302</td>
 
</tr>
 
</tr>
Line 99: Line 99:
 
<td>ff e0 00 00</td>
 
<td>ff e0 00 00</td>
 
<td>0.31.255.255</td>
 
<td>0.31.255.255</td>
<td>32 bs</td>
+
<td>32 Bs</td>
 
<td align="right">2,097,150</td>
 
<td align="right">2,097,150</td>
 
</tr>
 
</tr>
Line 107: Line 107:
 
<td>ff f0 00 00</td>
 
<td>ff f0 00 00</td>
 
<td>0.15.255.255</td>
 
<td>0.15.255.255</td>
<td>16 bs</td>
+
<td>16 Bs</td>
 
<td align="right">1,048,574</td>
 
<td align="right">1,048,574</td>
 
</tr>
 
</tr>
Line 115: Line 115:
 
<td>ff f8 00 00</td>
 
<td>ff f8 00 00</td>
 
<td>0.7.255.255</td>
 
<td>0.7.255.255</td>
<td>8 bs</td>
+
<td>8 Bs</td>
 
<td align="right">524,286</td>
 
<td align="right">524,286</td>
 
</tr>
 
</tr>
Line 123: Line 123:
 
<td>ff fc 00 00</td>
 
<td>ff fc 00 00</td>
 
<td>0.3.255.255</td>
 
<td>0.3.255.255</td>
<td>4 bs</td>
+
<td>4 Bs</td>
 
<td align="right">262,142</td>
 
<td align="right">262,142</td>
 
</tr>
 
</tr>
Line 131: Line 131:
 
<td>ff fe 00 00</td>
 
<td>ff fe 00 00</td>
 
<td>0.1.255.255</td>
 
<td>0.1.255.255</td>
<td>2 bs</td>
+
<td>2 Bs</td>
 
<td align="right">131,070</td>
 
<td align="right">131,070</td>
 
</tr>
 
</tr>
Line 139: Line 139:
 
<td>ff ff 00 00</td>
 
<td>ff ff 00 00</td>
 
<td>0.0.255.255</td>
 
<td>0.0.255.255</td>
<td>1 b or 256 cs</td>
+
<td>1 B or 256 Cs</td>
 
<td align="right">65,534</td>
 
<td align="right">65,534</td>
 
</tr>
 
</tr>
Line 147: Line 147:
 
<td>ff ff 80 00</td>
 
<td>ff ff 80 00</td>
 
<td>0.0.127.255</td>
 
<td>0.0.127.255</td>
<td>128 cs</td>
+
<td>128 Cs</td>
 
<td align="right">32,766</td>
 
<td align="right">32,766</td>
 
</tr>
 
</tr>
Line 155: Line 155:
 
<td>ff ff c0 00</td>
 
<td>ff ff c0 00</td>
 
<td>0.0.63.255</td>
 
<td>0.0.63.255</td>
<td>64 cs</td>
+
<td>64 Cs</td>
 
<td align="right">16,382</td>
 
<td align="right">16,382</td>
 
</tr>
 
</tr>
Line 163: Line 163:
 
<td>ff ff e0 00</td>
 
<td>ff ff e0 00</td>
 
<td>0.0.31.255</td>
 
<td>0.0.31.255</td>
<td>32 cs</td>
+
<td>32 Cs</td>
 
<td align="right">8,190</td>
 
<td align="right">8,190</td>
 
</tr>
 
</tr>
Line 171: Line 171:
 
<td>ff ff f0 00</td>
 
<td>ff ff f0 00</td>
 
<td>0.0.15.255</td>
 
<td>0.0.15.255</td>
<td>16 cs</td>
+
<td>16 Cs</td>
 
<td align="right">4,094</td>
 
<td align="right">4,094</td>
 
</tr>
 
</tr>
Line 179: Line 179:
 
<td>ff ff f8 00</td>
 
<td>ff ff f8 00</td>
 
<td>0.0.7.255</td>
 
<td>0.0.7.255</td>
<td>8 cs</td>
+
<td>8 Cs</td>
 
<td align="right">2,046</td>
 
<td align="right">2,046</td>
 
</tr>
 
</tr>
Line 187: Line 187:
 
<td>ff ff fc 00</td>
 
<td>ff ff fc 00</td>
 
<td>0.0.3.255</td>
 
<td>0.0.3.255</td>
<td>4 cs</td>
+
<td>4 Cs</td>
 
<td align="right">1,022</td>
 
<td align="right">1,022</td>
 
</tr>
 
</tr>
Line 195: Line 195:
 
<td>ff ff fe 00</td>
 
<td>ff ff fe 00</td>
 
<td>0.0.1.255</td>
 
<td>0.0.1.255</td>
<td>2 cs</td>
+
<td>2 Cs</td>
 
<td align="right">510</td>
 
<td align="right">510</td>
 
</tr>
 
</tr>
Line 203: Line 203:
 
<td>ff ff ff 00</td>
 
<td>ff ff ff 00</td>
 
<td>0.0.0.255</td>
 
<td>0.0.0.255</td>
<td>1 c</td>
+
<td>1 C</td>
 
<td align="right">254</td>
 
<td align="right">254</td>
 
</tr>
 
</tr>
Line 211: Line 211:
 
<td>ff ff ff 80</td>
 
<td>ff ff ff 80</td>
 
<td>0.0.0.127</td>
 
<td>0.0.0.127</td>
<td>1/2 c</td>
+
<td>1/2 C</td>
 
<td align="right">126</td>
 
<td align="right">126</td>
 
</tr>
 
</tr>
Line 219: Line 219:
 
<td>ff ff ff c0</td>
 
<td>ff ff ff c0</td>
 
<td>0.0.0.63</td>
 
<td>0.0.0.63</td>
<td>1/4 c</td>
+
<td>1/4 C</td>
 
<td align="right">62</td>
 
<td align="right">62</td>
 
</tr>
 
</tr>
Line 227: Line 227:
 
<td>ff ff ff e0</td>
 
<td>ff ff ff e0</td>
 
<td>0.0.0.31</td>
 
<td>0.0.0.31</td>
<td>1/8 c</td>
+
<td>1/8 C</td>
 
<td align="right">30</td>
 
<td align="right">30</td>
 
</tr>
 
</tr>
Line 235: Line 235:
 
<td>ff ff ff f0</td>
 
<td>ff ff ff f0</td>
 
<td>0.0.0.15</td>
 
<td>0.0.0.15</td>
<td>1/16 c</td>
+
<td>1/16 C</td>
 
<td align="right">14</td>
 
<td align="right">14</td>
 
</tr>
 
</tr>
Line 243: Line 243:
 
<td>ff ff ff f8</td>
 
<td>ff ff ff f8</td>
 
<td>0.0.0.7</td>
 
<td>0.0.0.7</td>
<td>1/32 c</td>
+
<td>1/32 C</td>
 
<td align="right">6</td>
 
<td align="right">6</td>
 
</tr>
 
</tr>
Line 251: Line 251:
 
<td>ff ff ff fc</td>
 
<td>ff ff ff fc</td>
 
<td>0.0.0.3</td>
 
<td>0.0.0.3</td>
<td>1/64 c</td>
+
<td>1/64 C</td>
 
<td align="right">2</td>
 
<td align="right">2</td>
 
</tr>
 
</tr>
Line 259: Line 259:
 
<td>ff ff ff fe</td>
 
<td>ff ff ff fe</td>
 
<td>0.0.0.1</td>
 
<td>0.0.0.1</td>
<td>1/128 c</td>
+
<td>1/128 C</td>
 
<td align="right">0</td>
 
<td align="right">0</td>
 
</tr>
 
</tr>
Line 267: Line 267:
 
<td>ff ff ff ff</td>
 
<td>ff ff ff ff</td>
 
<td>0.0.0.0</td>
 
<td>0.0.0.0</td>
<td>1/256 c</td>
+
<td>1/256 C</td>
 
<td align="right">1</td>
 
<td align="right">1</td>
 
</tr>
 
</tr>
 
</table>
 
</table>

Latest revision as of 18:40, 2 April 2008


CIDR prefix dotted decimal
netmask
hex netmask inverse mask number of

classfull

networks
number of host
addresses *
/1 128.0.0.0 80 00 00 00 127.255.255.255 128 As 2,147,483,646
/2 192.0.0.0 c0 00 00 00 63.255.255.255 64 As 1,073,741,822
/3 224.0.0.0 e0 00 00 00 31.255.255.255 32 As 536,870,910
/4 240.0.0.0 f0 00 00 00 15.255.255.255 16 As 268,435,454
/5 248.0.0.0 f8 00 00 00 7.255.255.255 8 As 134,217,726
/6 252.0.0.0 fc 00 00 00 3.255.255.255 4 As 67,108,862
/7 254.0.0.0 fe 00 00 00 1.255.255.255 2 As 33,554,430
/8 255.0.0.0 ff 00 00 00 0.255.255.255 1 A or 256 Bs 16,777,214
/9 255.128.0.0 ff 80 00 00 0.127.255.255 128 Bs 8,388,606
/10 255.192.0.0 ff c0 00 00 0.63.255.255 64 Bs 4,194,302
/11 255.224.0.0 ff e0 00 00 0.31.255.255 32 Bs 2,097,150
/12 255.240.0.0 ff f0 00 00 0.15.255.255 16 Bs 1,048,574
/13 255.248.0.0 ff f8 00 00 0.7.255.255 8 Bs 524,286
/14 255.252.0.0 ff fc 00 00 0.3.255.255 4 Bs 262,142
/15 255.254.0.0 ff fe 00 00 0.1.255.255 2 Bs 131,070
/16 255.255.0.0 ff ff 00 00 0.0.255.255 1 B or 256 Cs 65,534
/17 255.255.128.0 ff ff 80 00 0.0.127.255 128 Cs 32,766
/18 255.255.192.0 ff ff c0 00 0.0.63.255 64 Cs 16,382
/19 255.255.224.0 ff ff e0 00 0.0.31.255 32 Cs 8,190
/20 255.255.240.0 ff ff f0 00 0.0.15.255 16 Cs 4,094
/21 255.255.248.0 ff ff f8 00 0.0.7.255 8 Cs 2,046
/22 255.255.252.0 ff ff fc 00 0.0.3.255 4 Cs 1,022
/23 255.255.254.0 ff ff fe 00 0.0.1.255 2 Cs 510
/24 255.255.255.0 ff ff ff 00 0.0.0.255 1 C 254
/25 255.255.255.128 ff ff ff 80 0.0.0.127 1/2 C 126
/26 255.255.255.192 ff ff ff c0 0.0.0.63 1/4 C 62
/27 255.255.255.224 ff ff ff e0 0.0.0.31 1/8 C 30
/28 255.255.255.240 ff ff ff f0 0.0.0.15 1/16 C 14
/29 255.255.255.248 ff ff ff f8 0.0.0.7 1/32 C 6
/30 255.255.255.252 ff ff ff fc 0.0.0.3 1/64 C 2
/31 255.255.255.254 ff ff ff fe 0.0.0.1 1/128 C 0
/32 255.255.255.255 ff ff ff ff 0.0.0.0 1/256 C 1