{"id":15844,"date":"2026-10-08T21:14:01","date_gmt":"2026-10-08T21:14:01","guid":{"rendered":"https:\/\/savethevideo.net\/blog\/?p=15844"},"modified":"2026-10-08T21:15:12","modified_gmt":"2026-10-08T21:15:12","slug":"what-is-an-ip-address-ipv4-vs-ipv6-for-understanding-internet-addressing","status":"publish","type":"post","link":"https:\/\/savethevideo.net\/blog\/what-is-an-ip-address-ipv4-vs-ipv6-for-understanding-internet-addressing\/","title":{"rendered":"What Is an IP Address?: IPv4 vs IPv6 for Understanding Internet Addressing"},"content":{"rendered":"<p><strong>An IP address is the number that identifies a device or network on the internet, so data knows where to go and where to return.<\/strong> Think of it as a delivery address for websites, phones, laptops, servers, game consoles, and routers. Without it, your browser could ask for a web page, but the answer would have nowhere to land.<\/p>\n<p><strong>TLDR:<\/strong> An IP address is a digital address used to send data between devices. <strong>IPv4<\/strong> uses shorter addresses like <em>192.168.1.25<\/em>, while <strong>IPv6<\/strong> uses much longer ones like <em>2001:db8:85a3::8a2e:370:7334<\/em>. A small office with 40 connected devices may share one public IPv4 address through a router, while IPv6 can give each device its own unique public address. Global IPv6 use has passed roughly <strong>45%<\/strong> in many major traffic reports, mainly because the world ran short of fresh IPv4 addresses.<\/p>\n<h2>What an IP Address Actually Does<\/h2>\n<p>Every time you open a website, stream a video, join a call, or check email, your device sends packets of data. Each packet needs source and destination information. The IP address handles that job.<\/p>\n<p>If your laptop asks for <em>example.com<\/em>, the internet needs to know two things:<\/p>\n<ul>\n<li><strong>Where the request came from<\/strong>, so the reply can return.<\/li>\n<li><strong>Where the request should go<\/strong>, so it reaches the right server.<\/li>\n<\/ul>\n<p>That sounds simple. It is not always simple in practice. The annoying part is that many connection errors do not clearly say, \u201cYour IP settings are wrong.\u201d Instead, you get vague messages like <em>network unavailable<\/em>, <em>connection timed out<\/em>, or <em>server not found<\/em>.<\/p>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/02\/red-and-black-heart-illustration-world-map-with-ip-locations-global-network-connections-geo-targeting-concept.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/02\/red-and-black-heart-illustration-world-map-with-ip-locations-global-network-connections-geo-targeting-concept.jpg 1080w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/02\/red-and-black-heart-illustration-world-map-with-ip-locations-global-network-connections-geo-targeting-concept-300x200.jpg 300w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/02\/red-and-black-heart-illustration-world-map-with-ip-locations-global-network-connections-geo-targeting-concept-1024x683.jpg 1024w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/02\/red-and-black-heart-illustration-world-map-with-ip-locations-global-network-connections-geo-targeting-concept-768x512.jpg 768w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/>\n<h2>Public IP vs Private IP<\/h2>\n<p>Most people do not have just one IP address in daily use. You usually deal with both a <strong>public IP address<\/strong> and a <strong>private IP address<\/strong>.<\/p>\n<p>A <strong>public IP<\/strong> is visible on the internet. Your internet service provider assigns it to your home or business connection. Websites see this address when you visit them, unless you use a VPN or similar service.<\/p>\n<p>A <strong>private IP<\/strong> is used inside your local network. Your router gives one to your laptop, phone, smart TV, printer, and other devices. Common private IPv4 addresses start with:<\/p>\n<ul>\n<li><strong>192.168.x.x<\/strong>, common in homes.<\/li>\n<li><strong>10.x.x.x<\/strong>, common in offices and larger networks.<\/li>\n<li><strong>172.16.x.x to 172.31.x.x<\/strong>, also used in private networks.<\/li>\n<\/ul>\n<p>Your router acts like a traffic clerk. It sends requests out using the public address, then remembers which internal device asked for what. This process is called <strong>NAT<\/strong>, or Network Address Translation.<\/p>\n<h2>What Is IPv4?<\/h2>\n<p><strong>IPv4<\/strong> stands for <em>Internet Protocol version 4<\/em>. It is the older and still widely used format. An IPv4 address has four number groups separated by dots.<\/p>\n<p>Example:<\/p>\n<p><strong>203.0.113.42<\/strong><\/p>\n<p>Each group can range from 0 to 255. Because of that structure, IPv4 supports about <strong>4.3 billion<\/strong> unique addresses. That once sounded huge. Then smartphones, cloud servers, connected cars, cameras, sensors, and smart speakers showed up. Suddenly, 4.3 billion was not enough.<\/p>\n<p>IPv4 survived because of workarounds. NAT is the big one. It lets many devices share a single public IPv4 address. This helped keep the internet running, but it also added extra layers to networking.<\/p>\n<p>For gaming, video calls, remote access, and self hosted servers, those extra layers can be irritating. Port forwarding, double NAT, and carrier grade NAT can add minutes or hours to what should be a simple setup.<\/p>\n<h2>What Is IPv6?<\/h2>\n<p><strong>IPv6<\/strong> stands for <em>Internet Protocol version 6<\/em>. It was created to solve the address shortage and improve how devices connect. IPv6 addresses are much longer than IPv4 addresses. They use hexadecimal characters and colons.<\/p>\n<p>Example:<\/p>\n<p><strong>2001:0db8:85a3:0000:0000:8a2e:0370:7334<\/strong><\/p>\n<p>The same address can often be shortened:<\/p>\n<p><strong>2001:db8:85a3::8a2e:370:7334<\/strong><\/p>\n<p>IPv6 supports an almost absurd number of addresses: about <strong>340 undecillion<\/strong>. That is 340 followed by 36 zeros. In plain terms, it is enough to give unique addresses to phones, servers, watches, appliances, factory sensors, and many future devices without relying so heavily on sharing tricks.<\/p>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"718\" src=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/10\/white-and-black-modem-router-with-four-lights-ipv4-ipv6-comparison-address-formats-internet-protocol.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/10\/white-and-black-modem-router-with-four-lights-ipv4-ipv6-comparison-address-formats-internet-protocol.jpg 1080w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/10\/white-and-black-modem-router-with-four-lights-ipv4-ipv6-comparison-address-formats-internet-protocol-300x199.jpg 300w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/10\/white-and-black-modem-router-with-four-lights-ipv4-ipv6-comparison-address-formats-internet-protocol-1024x681.jpg 1024w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/10\/white-and-black-modem-router-with-four-lights-ipv4-ipv6-comparison-address-formats-internet-protocol-768x511.jpg 768w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/>\n<h2>IPv4 vs IPv6: The Key Differences<\/h2>\n<p>IPv4 and IPv6 perform the same basic job, but they do it in different ways.<\/p>\n<ul>\n<li><strong>Address length:<\/strong> IPv4 uses 32 bits. IPv6 uses 128 bits.<\/li>\n<li><strong>Format:<\/strong> IPv4 looks like <em>198.51.100.7<\/em>. IPv6 looks like <em>2001:db8::7<\/em>.<\/li>\n<li><strong>Address supply:<\/strong> IPv4 has about 4.3 billion addresses. IPv6 has vastly more.<\/li>\n<li><strong>NAT dependence:<\/strong> IPv4 often needs NAT. IPv6 was designed so devices can have unique addresses.<\/li>\n<li><strong>Configuration:<\/strong> IPv6 supports automatic address setup in many cases.<\/li>\n<li><strong>Security support:<\/strong> IPv6 was built with modern networking needs in mind, though security still depends on proper setup.<\/li>\n<\/ul>\n<p>IPv6 is not simply \u201cfaster IPv4.\u201d Speed depends on your provider, router, routing path, server, and settings. In some cases IPv6 is faster. In others, IPv4 wins by a bit. The protocol alone does not guarantee better performance.<\/p>\n<h2>Why We Still Use Both<\/h2>\n<p>If IPv6 has so many addresses, why has IPv4 not vanished? Compatibility.<\/p>\n<p>Millions of older devices, systems, and networks still rely on IPv4. Many websites support both. Many home routers support both. Some networks still use IPv4 only. Others use <strong>dual stack<\/strong>, which means IPv4 and IPv6 run side by side.<\/p>\n<p>This mixed state will last for years. Expect to waste time on edge cases if you manage networks. One app may prefer IPv6. Another may fail unless IPv4 works. A printer may behave fine on a local IPv4 network but ignore IPv6 completely. It can be messy.<\/p>\n<h2>How Domain Names Fit In<\/h2>\n<p>Most people do not type IP addresses into browsers. They type domain names like <em>google.com<\/em> or <em>wikipedia.org<\/em>. The <strong>Domain Name System<\/strong>, usually called <strong>DNS<\/strong>, translates those names into IP addresses.<\/p>\n<p>For IPv4, DNS uses an <strong>A record<\/strong>. For IPv6, DNS uses an <strong>AAAA record<\/strong>. When your browser asks for a site, DNS may return one or both types. Your device then chooses how to connect.<\/p>\n<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1620\" src=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup.jpg 1080w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup-200x300.jpg 200w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup-683x1024.jpg 683w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup-768x1152.jpg 768w, https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2026\/06\/a-rack-of-servers-with-wires-and-wires-attached-to-them-dns-servers-internet-routing-domain-lookup-1024x1536.jpg 1024w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/>\n<h2>Can Your IP Address Identify You?<\/h2>\n<p>An IP address can reveal some information, but it is not a perfect personal ID. It may show your internet provider, rough city or region, and connection type. It usually does not reveal your exact home address to a random website.<\/p>\n<p>Still, IP addresses matter for privacy. Websites use them for fraud checks, traffic logs, security blocks, ads, and regional content rules. A business may block repeated failed login attempts from one IP. A streaming service may use IP location to decide which shows appear.<\/p>\n<p>Your public IP can also change. Many home connections use <strong>dynamic assignment<\/strong>, where the provider changes the address from time to time. Businesses often pay for a <strong>static IP<\/strong>, which stays the same and is useful for servers, VPNs, and remote access.<\/p>\n<h2>Which One Should You Care About?<\/h2>\n<p>For everyday browsing, you do not need to memorize IP formats. Your devices handle most of it. But knowing the basics helps when fixing Wi Fi problems, setting up cameras, hosting a game server, choosing a VPN, or reading router settings.<\/p>\n<p>If you see an address like <strong>192.168.0.14<\/strong>, you are probably looking at a private IPv4 address inside your home. If you see a long address with colons, it is IPv6. If a support agent asks for your public IP, they usually mean the address assigned by your internet provider, not the private one shown inside your router app.<\/p>\n<p><strong>IPv4 is the older workhorse.<\/strong> <strong>IPv6 is the larger, newer system built for a crowded internet.<\/strong> Both help your data reach the right place. The better you understand them, the less mysterious network problems become.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An IP address is the number that identifies a device or network on the internet, so data knows where to go and where to return. Think of it as a &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"What Is an IP Address?: IPv4 vs IPv6 for Understanding Internet Addressing\" class=\"read-more button\" href=\"https:\/\/savethevideo.net\/blog\/what-is-an-ip-address-ipv4-vs-ipv6-for-understanding-internet-addressing\/#more-15844\" aria-label=\"Read more about What Is an IP Address?: IPv4 vs IPv6 for Understanding Internet Addressing\">Read more<\/a><\/p>\n","protected":false},"author":88,"featured_media":14788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[495],"tags":[],"class_list":["post-15844","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is an IP Address?: IPv4 vs IPv6 for Understanding Internet Addressing - Save the Video Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/savethevideo.net\/blog\/what-is-an-ip-address-ipv4-vs-ipv6-for-understanding-internet-addressing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is an IP Address?: IPv4 vs IPv6 for Understanding Internet Addressing - Save the Video Blog\" \/>\n<meta property=\"og:description\" content=\"An IP address is the number that identifies a device or network on the internet, so data knows where to go and where to return. 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