Code Golf

#6: Post edited by

trichoplax‭ · 2023-06-19T10:24:45Z (11 months ago)
Add finalized tag now that the sandbox can be filtered to exclude tags

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Find the IP address class [FINALIZED]

# Task 
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)

For reference, here is a table:


<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading<br>bits</th>
<th style="width: 175px;">Number<br>of networks</th>
<th style="width: 160px;">Addresses<br>per network</th>
<th style="width: 29px;">Total addresses<br>in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">0</td>
<td style="width: 175px;">128 (2<sup>7</sup>)</td>
<td style="width: 160px;">16,777,216 (2<sup>24</sup>)</td>
<td style="width: 29px;">2,147,483,648 (2<sup>31</sup>)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">10</td>
<td style="width: 175px;">16,384 (2<sup>14</sup>)</td>
<td style="width: 160px;">65,536 (2<sup>16</sup>)</td>
<td style="width: 29px;">1,073,741,824 (2<sup>30</sup>)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">110</td>
<td style="width: 175px;">2,097,152 (2<sup>21</sup>)</td>
<td style="width: 160px;">256 (2<sup>8</sup>)</td>
<td style="width: 29px;">536,870,912 (2<sup>29</sup>)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">1110</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (2<sup>28</sup>)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">1111</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (2<sup>28</sup>)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>


The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.

- The given IP will always be valid, and ti will always be a string.
- IP will not have insignificant zeroes.
- IP will not be in any form other than IPv4 dot notation. 

# Rules
This is code-golf. Shortest answer in each language wins.

code-golf finalized internet

#5: Post edited by

Razetime‭ · 2021-12-07T12:44:32Z (over 2 years ago)

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~~Find the IP address class~~

Find the IP address class [FINALIZED]

#4: Post edited by

Razetime‭ · 2021-11-15T08:44:45Z (over 2 years ago)

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# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">0</td>
<td style="width: 175px;">128 (27)</td>
<td style="width: 160px;">16,777,216 (224)</td>
<td style="width: 29px;">2,147,483,648 (231)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">10</td>
<td style="width: 175px;">16,384 (214)</td>
<td style="width: 160px;">65,536 (216)</td>
<td style="width: 29px;">1,073,741,824 (230)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">110</td>
<td style="width: 175px;">2,097,152 (221)</td>
<td style="width: 160px;">256 (28)</td>
<td style="width: 29px;">536,870,912 (229)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">1110</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">1111</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
# Rules
This is code-golf. Shortest answer in each language wins.

# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">0</td>
<td style="width: 175px;">128 (27)</td>
<td style="width: 160px;">16,777,216 (224)</td>
<td style="width: 29px;">2,147,483,648 (231)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">10</td>
<td style="width: 175px;">16,384 (214)</td>
<td style="width: 160px;">65,536 (216)</td>
<td style="width: 29px;">1,073,741,824 (230)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">110</td>
<td style="width: 175px;">2,097,152 (221)</td>
<td style="width: 160px;">256 (28)</td>
<td style="width: 29px;">536,870,912 (229)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">1110</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">1111</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
- The given IP will always be valid, and ti will always be a string.
- IP will not have insignificant zeroes.
- IP will not be in any form other than IPv4 dot notation.
# Rules
This is code-golf. Shortest answer in each language wins.

#3: Post edited by

Razetime‭ · 2021-11-06T03:58:02Z (over 2 years ago)

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# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
~~<td style="width: 45px;">    0</td>~~
~~<td style="width: 175px;">    128 (27)</td>~~
~~<td style="width: 160px;">    16,777,216 (224)</td>~~
~~<td style="width: 29px;">    2,147,483,648 (231)</td>~~
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
~~<td style="width: 45px;">    10</td>~~
~~<td style="width: 175px;">    16,384 (214)</td>~~
~~<td style="width: 160px;">    65,536 (216)</td>~~
~~<td style="width: 29px;">    1,073,741,824 (230)</td>~~
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
~~<td style="width: 45px;">    110</td>~~
~~<td style="width: 175px;">    2,097,152 (221)</td>~~
~~<td style="width: 160px;">    256 (28)</td>~~
~~<td style="width: 29px;">    536,870,912 (229)</td>~~
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
~~<td style="width: 45px;">    1110</td>~~
~~<td style="width: 175px;">    not defined</td>~~
~~<td style="width: 160px;">    not defined</td>~~
~~<td style="width: 29px;">    268,435,456 (228)</td>~~
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
~~<td style="width: 45px;">    1111</td>~~
~~<td style="width: 175px;">    not defined</td>~~
~~<td style="width: 160px;">    not defined</td>~~
~~<td style="width: 29px;">    268,435,456 (228)</td>~~
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
# Rules
This is code-golf. Shortest answer in each language wins.

# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">0</td>
<td style="width: 175px;">128 (27)</td>
<td style="width: 160px;">16,777,216 (224)</td>
<td style="width: 29px;">2,147,483,648 (231)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">10</td>
<td style="width: 175px;">16,384 (214)</td>
<td style="width: 160px;">65,536 (216)</td>
<td style="width: 29px;">1,073,741,824 (230)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">110</td>
<td style="width: 175px;">2,097,152 (221)</td>
<td style="width: 160px;">256 (28)</td>
<td style="width: 29px;">536,870,912 (229)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">1110</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">1111</td>
<td style="width: 175px;">not defined</td>
<td style="width: 160px;">not defined</td>
<td style="width: 29px;">268,435,456 (228)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
# Rules
This is code-golf. Shortest answer in each language wins.

#2: Post edited by

Razetime‭ · 2021-11-06T03:53:43Z (over 2 years ago)

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# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
~~<th style="width: 90px;">Size of network number bit field</th>~~
~~<th style="width: 66px;">Size of rest bit field</th>~~
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">    0</td>
~~<td style="width: 90px;">    8</td>~~
~~<td style="width: 66px;">    24</td>~~
<td style="width: 175px;">    128 (27)</td>
<td style="width: 160px;">    16,777,216 (224)</td>
<td style="width: 29px;">    2,147,483,648 (231)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">    10</td>
~~<td style="width: 90px;">    16</td>~~
~~<td style="width: 66px;">    16</td>~~
<td style="width: 175px;">    16,384 (214)</td>
<td style="width: 160px;">    65,536 (216)</td>
<td style="width: 29px;">    1,073,741,824 (230)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">    110</td>
~~<td style="width: 90px;">    24</td>~~
~~<td style="width: 66px;">    8</td>~~
<td style="width: 175px;">    2,097,152 (221)</td>
<td style="width: 160px;">    256 (28)</td>
<td style="width: 29px;">    536,870,912 (229)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">    1110</td>
~~<td style="width: 90px;">    not defined</td>~~
~~<td style="width: 66px;">    not defined</td>~~
<td style="width: 175px;">    not defined</td>
<td style="width: 160px;">    not defined</td>
<td style="width: 29px;">    268,435,456 (228)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">    1111</td>
~~<td style="width: 90px;">    not defined</td>~~
~~<td style="width: 66px;">    not defined</td>~~
<td style="width: 175px;">    not defined</td>
<td style="width: 160px;">    not defined</td>
<td style="width: 29px;">    268,435,456 (228)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
# Rules
This is code-golf. Shortest answer in each language wins.

# Task
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)
For reference, here is a table:
<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading bits</th>
<th style="width: 175px;">Number of networks</th>
<th style="width: 160px;">Addresses per network</th>
<th style="width: 29px;">Total addresses in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">    0</td>
<td style="width: 175px;">    128 (27)</td>
<td style="width: 160px;">    16,777,216 (224)</td>
<td style="width: 29px;">    2,147,483,648 (231)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">    10</td>
<td style="width: 175px;">    16,384 (214)</td>
<td style="width: 160px;">    65,536 (216)</td>
<td style="width: 29px;">    1,073,741,824 (230)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">    110</td>
<td style="width: 175px;">    2,097,152 (221)</td>
<td style="width: 160px;">    256 (28)</td>
<td style="width: 29px;">    536,870,912 (229)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">    1110</td>
<td style="width: 175px;">    not defined</td>
<td style="width: 160px;">    not defined</td>
<td style="width: 29px;">    268,435,456 (228)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">    1111</td>
<td style="width: 175px;">    not defined</td>
<td style="width: 160px;">    not defined</td>
<td style="width: 29px;">    268,435,456 (228)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>
The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.
# Rules
This is code-golf. Shortest answer in each language wins.

#1: Initial revision by

Razetime‭ · 2021-11-05T13:39:51Z (over 2 years ago)

Copy Link

Raw

Markdown

Find the IP address class

# Task 
Given an IP address as a string, find its [IP address class.](https://www.guru99.com/ip-address-classes.html)

For reference, here is a table:

<table class="wikitable" style="width: 855px;">
<tbody>
<tr>
<th style="width: 92px;">Class</th>
<th style="width: 45px;">Leading<br>bits</th>
<th style="width: 90px;">Size of <em>network<br>number</em> bit field</th>
<th style="width: 66px;">Size of <em>rest</em><br>bit field</th>
<th style="width: 175px;">Number<br>of networks</th>
<th style="width: 160px;">Addresses<br>per network</th>
<th style="width: 29px;">Total addresses<br>in class</th>
<th style="width: 43px;">Start address</th>
<th style="width: 146px;">End address</th>
</tr>
<tr>
<td style="width: 92px;">Class A</td>
<td style="width: 45px;">&nbsp;&nbsp;&nbsp;&nbsp;0</td>
<td style="width: 90px;">&nbsp;&nbsp;&nbsp;&nbsp;8</td>
<td style="width: 66px;">&nbsp;&nbsp;&nbsp;&nbsp;24</td>
<td style="width: 175px;">&nbsp;&nbsp;&nbsp;&nbsp;128 (2<sup>7</sup>)</td>
<td style="width: 160px;">&nbsp;&nbsp;&nbsp;&nbsp;16,777,216 (2<sup>24</sup>)</td>
<td style="width: 29px;">&nbsp;&nbsp;&nbsp;&nbsp;2,147,483,648 (2<sup>31</sup>)</td>
<td style="width: 43px;">0.0.0.0</td>
<td style="width: 146px;">127.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class B</td>
<td style="width: 45px;">&nbsp;&nbsp;&nbsp;&nbsp;10</td>
<td style="width: 90px;">&nbsp;&nbsp;&nbsp;&nbsp;16</td>
<td style="width: 66px;">&nbsp;&nbsp;&nbsp;&nbsp;16</td>
<td style="width: 175px;">&nbsp;&nbsp;&nbsp;&nbsp;16,384 (2<sup>14</sup>)</td>
<td style="width: 160px;">&nbsp;&nbsp;&nbsp;&nbsp;65,536 (2<sup>16</sup>)</td>
<td style="width: 29px;">&nbsp;&nbsp;&nbsp;&nbsp;1,073,741,824 (2<sup>30</sup>)</td>
<td style="width: 43px;">128.0.0.0</td>
<td style="width: 146px;">191.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class C</td>
<td style="width: 45px;">&nbsp;&nbsp;&nbsp;&nbsp;110</td>
<td style="width: 90px;">&nbsp;&nbsp;&nbsp;&nbsp;24</td>
<td style="width: 66px;">&nbsp;&nbsp;&nbsp;&nbsp;8</td>
<td style="width: 175px;">&nbsp;&nbsp;&nbsp;&nbsp;2,097,152 (2<sup>21</sup>)</td>
<td style="width: 160px;">&nbsp;&nbsp;&nbsp;&nbsp;256 (2<sup>8</sup>)</td>
<td style="width: 29px;">&nbsp;&nbsp;&nbsp;&nbsp;536,870,912 (2<sup>29</sup>)</td>
<td style="width: 43px;">192.0.0.0</td>
<td style="width: 146px;">223.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class D (multicast)</td>
<td style="width: 45px;">&nbsp;&nbsp;&nbsp;&nbsp;1110</td>
<td style="width: 90px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 66px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 175px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 160px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 29px;">&nbsp;&nbsp;&nbsp;&nbsp;268,435,456 (2<sup>28</sup>)</td>
<td style="width: 43px;">224.0.0.0</td>
<td style="width: 146px;">239.255.255.255</td>
</tr>
<tr>
<td style="width: 92px;">Class E (reserved)</td>
<td style="width: 45px;">&nbsp;&nbsp;&nbsp;&nbsp;1111</td>
<td style="width: 90px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 66px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 175px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 160px;">&nbsp;&nbsp;&nbsp;&nbsp;not defined</td>
<td style="width: 29px;">&nbsp;&nbsp;&nbsp;&nbsp;268,435,456 (2<sup>28</sup>)</td>
<td style="width: 43px;">240.0.0.0</td>
<td style="width: 146px;">255.255.255.255</td>
</tr>
</tbody>
</table>

The simplest way to find the class of an address is to check the bits of its first octet. Once you find the the answer, you are required to output a character or a codepoint which represents one of the characters A, B, C, D or E.

# Rules
This is code-golf. Shortest answer in each language wins.

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