Difference between revisions of "CICR"
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(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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 | + | <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 |
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 |