{"id":139,"date":"2026-01-04T21:11:18","date_gmt":"2026-01-04T21:11:18","guid":{"rendered":"https:\/\/edk-tech.net\/?post_type=glossary&amp;p=139"},"modified":"2026-01-04T21:11:18","modified_gmt":"2026-01-04T21:11:18","slug":"internet-protocol-version-4","status":"publish","type":"glossary","link":"https:\/\/edk-tech.net\/?glossary=internet-protocol-version-4","title":{"rendered":"Internet Protocol version 4 (IPv4)"},"content":{"rendered":"\n<p><a href=\"https:\/\/edk-tech.net\/?glossary=internet-protocol-version-4\"\r\n                    class=\"yaw-glossary yaw-glossary-alt-link\"\r\n                    title=\"Internet Protocol version 4 (IPv4)\"\r\n                    data-bs-toggle=\"popover\"\r\n                    data-bs-html=\"true\"\r\n                    data-bs-trigger=\"hover focus\"\r\n                    data-bs-content=\"&lt;p&gt;IPv4 address classes Predefined ranges of IP addresses (Classes A, B, C, D, and E) designed to allocate addresses based on network size, with Class A for large networks, Class B for medium-sized networks, Class C for small networks, Class&hellip;&lt;\/p&gt;\n\">IPv4<\/a> address classes Predefined ranges of IP addresses (Classes A, B, C, D, and E) designed to allocate addresses based on network size, with Class A for large networks, Class B for medium-sized networks, Class C for small networks, Class D for multicast, and Class E reserved for experimental use.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Public<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Class<\/th><th>Range<\/th><th>Subnet Mask<\/th><th>CIDR notation<\/th><\/tr><\/thead><tbody><tr><th>A<\/th><td>0. 0.0.0 \u2013 126.255.255.255<\/td><td>255.0.0.0<\/td><td>&nbsp;<\/td><\/tr><tr><th>B<\/th><td>128.0.0.0 \u2013 191.255.255.255<\/td><td>255.255.0.0<\/td><td>&nbsp;<\/td><\/tr><tr><th>C<\/th><td>192. 0.0.0 \u2013 223.255.255.255<\/td><td>255.255.255.0<\/td><td>&nbsp;<\/td><\/tr><tr><th>D<\/th><td>224.0.0.0 \u2013 239.255.255.255<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><tr><th>E<\/th><td>240.0.0.0 \u2013 255.255.255.255<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Private<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Class<\/th><th>Range<\/th><th>Subnet Mask<\/th><th>CIDR notation<\/th><\/tr><\/thead><tbody><tr><th>A<\/th><td>10. 0.0.0 \u2013 10.255.255.255<\/td><td>255.0.0.0<\/td><td>10.0.0.0\/8<\/td><\/tr><tr><th>B<\/th><td>172.16.0.0 \u2013 172.31.255.255<\/td><td>255.255.0.0<\/td><td>172.16.0.0\/16<\/td><\/tr><tr><th>C<\/th><td>192.168.0.0 \u2013 192.168.255.255<\/td><td>255.255.255.0<\/td><td>192.168.0.0\/24<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Loopback Range<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Range<\/th><th>Subnet mask<\/th><th>CIDR notation<\/th><\/tr><\/thead><tbody><tr><td>127.0.0.0\u2013127.255.255.255<\/td><td>255.0.0.0<\/td><td>127.0.0.0\/8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>127.0.0.1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Automatic Private IP Addressing (APIPA; aka Link-Local address)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Range<\/th><th>Subnet mask<\/th><th>CIDR notation<\/th><\/tr><\/thead><tbody><tr><td>169.254.0.0 \u2013 169.254.255.255<\/td><td>255.255.0.0<\/td><td>169.254.0.0\/16<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Internetwork Broadcast Address<\/h2>\n\n\n\n<p>255.255.255.255<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Network Broadcast Address<\/h2>\n\n\n\n<p>x.x.x.255<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IPv4 address classes Predefined ranges of IP addresses (Classes A, B, C, D, and E) designed to allocate addresses based on network size, with Class A for large networks, Class B for medium-sized networks, Class C for small networks, Class D for multicast, and Class E reserved for experimental use. Public Class Range Subnet Mask [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","format":"standard","class_list":["post-139","glossary","type-glossary","status-publish","format-standard"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/edk-tech.net\/index.php?rest_route=\/wp\/v2\/glossary\/139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/edk-tech.net\/index.php?rest_route=\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/edk-tech.net\/index.php?rest_route=\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/edk-tech.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"version-history":[{"count":0,"href":"https:\/\/edk-tech.net\/index.php?rest_route=\/wp\/v2\/glossary\/139\/revisions"}],"wp:attachment":[{"href":"https:\/\/edk-tech.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}