{"id":1606,"date":"2012-03-02T05:59:09","date_gmt":"2012-03-02T05:59:09","guid":{"rendered":"http:\/\/www.obieta.com\/?p=1606"},"modified":"2012-03-02T05:59:09","modified_gmt":"2012-03-02T05:59:09","slug":"ip-subnet-calculator","status":"publish","type":"post","link":"https:\/\/obieta.com\/?p=1606","title":{"rendered":"IP Subnet Calculator"},"content":{"rendered":"<div id=\"top_menu\">\n<ul>\n<li><a title=\"Subnet Calculator (Classful)\" href=\"http:\/\/www.subnet-calculator.com\/\">Subnets<\/a><\/li>\n<li><a title=\"CIDR Calculator (Classless)\" href=\"http:\/\/www.subnet-calculator.com\/cidr.php\">CIDR<\/a><\/li>\n<li><a title=\"ACL (Access Control List) Wildcard Mask Calculator\" href=\"http:\/\/www.subnet-calculator.com\/wildcard.php\">Wildcard<\/a><\/li>\n<li><a title=\"Send Feedback\" href=\"http:\/\/www.subnet-calculator.com\/feedback_form.php\">Feedback<\/a><\/li>\n<\/ul>\n<\/div>\n<div id=\"calc_text\">\n<p><strong>IP Subnet Calculator<em> <\/em><\/strong><\/p>\n<p>The IP Subnet Mask Calculator enables subnet network calculations using network class, IP address,<em>subnet mask<\/em>, subnet bits, mask bits, maximum required IP subnets and maximum required hosts per subnet.<\/p>\n<p>Results of the subnet calculation provide the hexadecimal IP address, the wildcard mask, for use with ACL (Access Control Lists), subnet ID, broadcast address, the subnet address range for the resulting subnet network and a subnet bitmap.<\/p>\n<p>For classless supernetting, please use the\u00a0<a href=\"http:\/\/www.subnet-calculator.com\/cidr.php\">CIDR Calculator<\/a>. For classful supernetting, please use the\u00a0<a href=\"http:\/\/www.subnet-calculator.com\/supernets.php\">IP Supernet Calculator<\/a>. For simple ACL (Access Control List) wildcard mask calculations, please use the\u00a0<a href=\"http:\/\/www.subnet-calculator.com\/wildcard.php\">ACL Wildcard Mask Calculator<\/a>.<\/p>\n<p>Note:<br \/>These online network calculators may be used totally<em>free<\/em> of charge provided their use is from this url (www.subnet-calculator.com).<\/p>\n<\/div>\n<form id=\"calculator\" action=\"http:\/\/www.subnet-calculator.com\/rs_subnet.php\" method=\"get\">\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\"><img loading=\"lazy\" src=\"http:\/\/www.subnet-calculator.com\/images\/p18.jpg\" border=\"0\" alt=\"Subnet Calculator\" width=\"18\" height=\"15\" \/> <strong>Subnet Calculator<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Network Class<br \/><label>A\u00a0<input id=\"class_a\" name=\"class_a\" type=\"radio\" value=\"A\" \/> <\/label><label>B\u00a0<input id=\"class_b\" name=\"class_b\" type=\"radio\" value=\"B\" \/> <\/label><label>C\u00a0<input id=\"class_c\" name=\"class_c\" type=\"radio\" value=\"C\" \/><\/label><\/td>\n<td>First Octet Range<br \/><input id=\"oct_range\" name=\"oct_range\" readonly=\"readonly\" size=\"20\" type=\"text\" value=\"192 - 223\" \/><\/td>\n<\/tr>\n<tr>\n<td>IP Address<br \/><input id=\"ip_oct_1\" maxlength=\"3\" name=\"ip_oct_1\" type=\"text\" \/> <strong>.<\/strong> <input id=\"ip_oct_2\" maxlength=\"3\" name=\"ip_oct_2\" type=\"text\" value=\"168\" \/> <strong>.<\/strong> <input id=\"ip_oct_3\" maxlength=\"3\" name=\"ip_oct_3\" type=\"text\" value=\"0\" \/> <strong>.<\/strong> <input id=\"ip_oct_4\" maxlength=\"3\" name=\"ip_oct_4\" type=\"text\" value=\"1\" \/><\/td>\n<td>Hex IP Address<br \/><input id=\"hex_addr\" name=\"hex_addr\" readonly=\"readonly\" size=\"20\" type=\"text\" \/><\/td>\n<\/tr>\n<tr>\n<td>Subnet Mask<br \/><select id=\"subnet_mask\" name=\"subnet_mask\"><option value=\"0\">255.255.255.0<\/option><option value=\"1\">255.255.255.128<\/option><option value=\"2\">255.255.255.192<\/option><option value=\"3\">255.255.255.224<\/option><option value=\"4\">255.255.255.240<\/option><option value=\"5\">255.255.255.248<\/option><option value=\"6\">255.255.255.252<\/option><\/select><\/td>\n<td>Wildcard Mask<br \/><input id=\"inverted_mask\" name=\"inverted_mask\" readonly=\"readonly\" size=\"20\" type=\"text\" \/><\/td>\n<\/tr>\n<tr>\n<td>Subnet Bits<br \/><select id=\"subnet_bits\" name=\"subnet_bits\"><option value=\"0\">0<\/option><option value=\"1\">1<\/option><option value=\"2\">2<\/option><option value=\"3\">3<\/option><option value=\"4\">4<\/option><option value=\"5\">5<\/option><option value=\"6\">6<\/option><\/select><\/td>\n<td>Mask Bits<br \/><select id=\"mask_bits\" name=\"mask_bits\" size=\"1\"><option value=\"0\">24<\/option><option value=\"1\">25<\/option><option value=\"2\">26<\/option><option value=\"3\">27<\/option><option value=\"4\">28<\/option><option value=\"5\">29<\/option><option value=\"6\">30<\/option><\/select><\/td>\n<\/tr>\n<tr>\n<td>Maximum Subnets<br \/><select id=\"max_subnets\" name=\"max_subnets\" size=\"1\"><option value=\"0\">1<\/option><option value=\"1\">2<\/option><option value=\"2\">4<\/option><option value=\"3\">8<\/option><option value=\"4\">16<\/option><option value=\"5\">32<\/option><option value=\"6\">64<\/option><\/select><\/td>\n<td>Hosts per Subnet<br \/><select id=\"max_hosts\" name=\"max_hosts\" size=\"1\"><option value=\"0\">254<\/option><option value=\"1\">126<\/option><option value=\"2\">62<\/option><option value=\"3\">30<\/option><option value=\"4\">14<\/option><option value=\"5\">6<\/option><option value=\"6\">2<\/option><\/select><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Host Address Range<br \/><input id=\"host_range\" name=\"host_range\" readonly=\"readonly\" size=\"30\" type=\"text\" \/><\/td>\n<\/tr>\n<tr>\n<td>Subnet ID<br \/><input id=\"subnet_id\" name=\"subnet_id\" readonly=\"readonly\" size=\"20\" type=\"text\" \/><\/td>\n<td>Broadcast Address<br \/><input id=\"broadcast_addr\" name=\"broadcast_addr\" readonly=\"readonly\" size=\"20\" type=\"text\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Subnet Bitmap<br \/><input id=\"subnet_bitmap\" name=\"subnet_bitmap\" readonly=\"readonly\" size=\"40\" type=\"text\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/form>\n<div id=\"bottom_menu\">\n<ul>\n<li><a title=\"Resources\" href=\"http:\/\/www.subnet-calculator.com\/resources.php\">Resources<\/a><\/li>\n<\/ul>\n<\/div>\n<div id=\"bottom\">\n<div id=\"about\"><strong>Notes about the Subnet Calculator<\/strong><\/p>\n<ol>\n<li>The subnet calculator implements a classful \/ classed IP addressing scheme where the following rules are adhered to:\n<ul>\n<li>Class A addresses have their first octet in the range 1 to 126 (binary address begins with 0).\n<\/li>\n<li>Class B addresses have their first octet in the range 128 to 191 (binary address begins with 10).\n<\/li>\n<li>Class C addresses have their first octet in the range 192 to 223 (binary address begins with 110).\n<\/li>\n<\/ul>\n<\/li>\n<li>The subnet calculator allows the use of a single subnet bit &#8211; for example, a class C address with a subnet mask of 255.255.255.128 is permitted.\n<\/li>\n<li>The subnet calculator allows a subnet ID to have its final octet equal to the final octet of its subnet mask &#8211; for example, a class C network address of 192.168.0.192 with a subnet mask of 255.255.255.192 is permitted.\n<\/li>\n<\/ol>\n<p>The above is generally accepted as being &#8216;normal&#8217;, however, certification students should keep in mind that, in some certification programs, the final two points are regarded as inacceptible.<\/p>\n<p>For classless subnetting, you can use the\u00a0<a href=\"http:\/\/www.subnet-calculator.com\/cidr.php\">CIDR calculator<\/a>.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Subnets CIDR Wildcard Feedback IP Subnet Calculator The IP Subnet Mask Calculator enables subnet network calculations using network class, IP address,subnet mask, subnet bits, mask bits, maximum required IP subnets and maximum required hosts per subnet. Results of the subnet calculation provide the hexadecimal IP address, the wildcard mask, for use with ACL (Access Control [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,1],"tags":[],"_links":{"self":[{"href":"https:\/\/obieta.com\/index.php?rest_route=\/wp\/v2\/posts\/1606"}],"collection":[{"href":"https:\/\/obieta.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obieta.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obieta.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/obieta.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1606"}],"version-history":[{"count":0,"href":"https:\/\/obieta.com\/index.php?rest_route=\/wp\/v2\/posts\/1606\/revisions"}],"wp:attachment":[{"href":"https:\/\/obieta.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obieta.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obieta.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}