<form action="https://ipaddressguide.com/ip" method="post"> <p style="background:#fff;border:1px solid #99A8AE;width:180px;padding:5px 5px 5px 5px;font-size:11px;font-family:'Trebuchet MS',Arial,Sans-serif;"> <a href="https://ipaddressguide.com" target="_blank"><img src="https://ipaddressguide.com/images/ipaddressguide.gif" alt="CIDR calculator" border="0" width="120" height="12" /></a><br /> <b>CIDR Calculator</b><br /><br /> <label>CIDR</label> <input type="text" name="cidr" value="" style="border:solid 1px #C0C0C0;font-size:9px;width:110px;" /><br /> <input type="submit" value="Calculate" style="width:100px;font-size:10px;margin-top:3px;padding:2px 3px;color:#FFF;background:#8EB50C;border-width:1px;border-style:solid;"> </p> </form>