[{"data":1,"prerenderedAt":144},["ShallowReactive",2],{"term-i\u002Fipv4":3,"related-i\u002Fipv4":124},{"id":4,"title":5,"acronym":6,"body":7,"category":103,"description":104,"difficulty":105,"extension":106,"letter":107,"meta":108,"navigation":109,"path":110,"related":111,"seo":117,"sitemap":118,"stem":121,"subcategory":122,"__hash__":123},"terms\u002Fterms\u002Fi\u002Fipv4.md","IPv4","Internet Protocol version 4",{"type":8,"value":9,"toc":97},"minimark",[10,15,19,23,26,30,86,90,93],[11,12,14],"h2",{"id":13},"eli5-the-vibe-check","ELI5 — The Vibe Check",[16,17,18],"p",{},"IPv4 is the original address format for the internet — four numbers separated by dots, like 192.168.1.1. The problem? There are only about 4 billion possible addresses and we've run out. It's like trying to give every person on Earth a unique 4-digit phone number.",[11,20,22],{"id":21},"real-talk","Real Talk",[16,24,25],{},"IPv4 uses 32-bit addresses expressed as four octets in dotted-decimal notation (e.g., 192.168.0.1). It supports approximately 4.3 billion unique addresses. Address exhaustion led to techniques like NAT and eventually the development of IPv6.",[11,27,29],{"id":28},"show-me-the-code","Show Me The Code",[31,32,37],"pre",{"className":33,"code":34,"language":35,"meta":36,"style":36},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","# IPv4 address examples\n192.168.1.1       # Private (home router)\n10.0.0.1          # Private (corporate)\n8.8.8.8           # Google's public DNS\n127.0.0.1         # Localhost (your own machine)\n","bash","",[38,39,40,49,59,68,77],"code",{"__ignoreMap":36},[41,42,45],"span",{"class":43,"line":44},"line",1,[41,46,48],{"class":47},"sHwdD","# IPv4 address examples\n",[41,50,52,56],{"class":43,"line":51},2,[41,53,55],{"class":54},"sBMFI","192.168.1.1",[41,57,58],{"class":47},"       # Private (home router)\n",[41,60,62,65],{"class":43,"line":61},3,[41,63,64],{"class":54},"10.0.0.1",[41,66,67],{"class":47},"          # Private (corporate)\n",[41,69,71,74],{"class":43,"line":70},4,[41,72,73],{"class":54},"8.8.8.8",[41,75,76],{"class":47},"           # Google's public DNS\n",[41,78,80,83],{"class":43,"line":79},5,[41,81,82],{"class":54},"127.0.0.1",[41,84,85],{"class":47},"         # Localhost (your own machine)\n",[11,87,89],{"id":88},"when-youll-hear-this","When You'll Hear This",[16,91,92],{},"\"The server has an IPv4 address of 203.0.113.5.\" \u002F \"We're behind NAT because IPv4 addresses are exhausted.\"",[94,95,96],"style",{},"html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":36,"searchDepth":51,"depth":51,"links":98},[99,100,101,102],{"id":13,"depth":51,"text":14},{"id":21,"depth":51,"text":22},{"id":28,"depth":51,"text":29},{"id":88,"depth":51,"text":89},"networking","IPv4 is the original address format for the internet — four numbers separated by dots, like 192.168.1.1. The problem?","beginner","md","i",{},true,"\u002Fterms\u002Fi\u002Fipv4",[112,113,114,115,116],"IPv6","IP Address","NAT","CIDR","Subnet",{"title":5,"description":104},{"changefreq":119,"priority":120},"weekly",0.7,"terms\u002Fi\u002Fipv4",null,"zV5f4t3yTnobNlM33YNKOyMalhHlq47ElxgzmXsDSUM",[125,130,133,137,141],{"title":115,"path":126,"acronym":127,"category":103,"difficulty":128,"description":129},"\u002Fterms\u002Fc\u002Fcidr","Classless Inter-Domain Routing","intermediate","CIDR is the shorthand notation for specifying IP address ranges. '192.168.1.",{"title":113,"path":131,"acronym":122,"category":103,"difficulty":105,"description":132},"\u002Fterms\u002Fi\u002Fip-address","An IP address is your device's home address on the internet.",{"title":112,"path":134,"acronym":135,"category":103,"difficulty":128,"description":136},"\u002Fterms\u002Fi\u002Fipv6","Internet Protocol version 6","IPv6 is the new, massive address format for the internet. Instead of four small numbers, it's eight groups of letters and numbers separated by colons.",{"title":114,"path":138,"acronym":139,"category":103,"difficulty":128,"description":140},"\u002Fterms\u002Fn\u002Fnat","Network Address Translation","NAT is how your home router lets all your devices share one public IP address. Your phone, laptop, and TV each get a private IP (192.168.x.",{"title":116,"path":142,"acronym":122,"category":103,"difficulty":128,"description":143},"\u002Fterms\u002Fs\u002Fsubnet","A subnet is a smaller chunk of a larger network, like dividing a city into neighborhoods. All devices in a subnet can talk to each other directly.",1776518287934]