1920.222 Subneting

/21 = 11111111.11111111.11111000.00000000.<br />

&nbsp; &nbsp; &nbsp; 255&nbsp; &nbsp; &nbsp;.&nbsp; &nbsp; &nbsp; 255&nbsp; &nbsp; &nbsp;.&nbsp; &nbsp; &nbsp; 248&nbsp; &nbsp; &nbsp;.&nbsp; &nbsp; &nbsp; 0&nbsp; <br />

<br />

11111111=225<br />

11111111=255<br />

11111000=248<br />

00000000=0<br />

<br />