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<h1>IPv4 Explained: Definition, How It Works, Pros and Cons, and Comparison with IPv6</h1>
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<span>Benjamin Carter</span>
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<span>2025-06-08 13:31 · 8 min read</span>
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<nav><ul class='ez-toc-list ez-toc-list-level-1 '><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-1" href="#what-is-ipv4" title="What Is IPv4?">What Is IPv4?</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-2" href="#how-does-ipv4-work" title="How Does IPv4 Work?">How Does IPv4 Work?</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-3" href="#ipv4-proxy-functionality" title="IPv4 Proxy Functionality">IPv4 Proxy Functionality</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-4" href="#advantages-and-features-of-ipv4" title="Advantages and Features of IPv4">Advantages and Features of IPv4</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-5" href="#common-use-cases-for-ipv4-proxies" title="Common Use Cases for IPv4 Proxies">Common Use Cases for IPv4 Proxies</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-6" href="#ipv4-vs-ipv6" title="IPv4 vs. IPv6">IPv4 vs. IPv6</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-7" href="#conclusion" title="Conclusion">Conclusion</a></li></ul></nav></div>
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<p>When browsing the internet, using applications, or deploying websites, you may have come across the term “IPv4.” IPv4 is one of the foundational communication protocols of the internet—it determines how we locate and communicate with each other online. In this article, we’ll take a comprehensive look at what IPv4 is, how it works, and how it compares to IPv6.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="what-is-ipv4"></span><strong>What Is IPv4?</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>IPv4, short for Internet Protocol version 4, is the most widely used version of the IP protocol on the internet today. It enables communication between devices by assigning a unique IP address to each one.</p>
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<p>An IPv4 address consists of 32 bits and is typically expressed in dotted-decimal format, such as 192.168.0.1. Each address is made up of four numbers ranging from 0 to 255, allowing for approximately 4.2 billion unique IP addresses in total.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="how-does-ipv4-work"></span><strong>How Does IPv4 Work?</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>The core function of IPv4 is to assign addresses to devices and facilitate data exchange between them across a network. Here’s how it works:</p>
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<p><strong>Addressing</strong>: Every device is assigned a unique IPv4 address.</p>
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<p><strong>Packetizing</strong>: Data is divided into small packets, each containing the sender’s and receiver’s IP addresses.</p>
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<p><strong>Routing</strong>: Routers use these IP addresses to forward the packets to the correct destination.</p>
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<p><strong>Fragmentation</strong>: If a packet is too large, it gets fragmented for transmission and reassembled at the receiving end.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="ipv4-proxy-functionality"></span><strong>IPv4 Proxy Functionality</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>An IPv4 proxy is an intermediary server that uses an IPv4 address to send network requests on behalf of the user. It hides the user’s real IP address and replaces it with the proxy server’s IP during communication.</p>
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<p>Common functionalities include:</p>
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<p>Hiding the real IP to enhance anonymity</p>
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<p>Bypassing geo-blocks and access restrictions</p>
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<p>Increasing security for web requests</p>
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<p>Managing multiple accounts or IP pools</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="advantages-and-features-of-ipv4"></span><strong>Advantages and Features of IPv4</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>Although IPv6 is being adopted gradually, IPv4 remains the dominant protocol for internet communication. Its long-standing popularity can be attributed to several key advantages:</p>
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<p><strong>Mature and Stable</strong><br>IPv4 was introduced in 1981 and has undergone over four decades of refinement. It is well-supported across devices and operating systems due to its clear structure and ease of implementation.</p>
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<p><strong>Wide Global Compatibility</strong><br>IPv4 is the default protocol for almost all network-enabled devices—ranging from home routers and smartphones to enterprise servers and IoT hardware.</p>
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<p><strong>Simple Address Format</strong><br>The dotted-decimal notation (e.g., 192.168.1.1) is straightforward and user-friendly, with each segment ranging from 0 to 255.</p>
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<p><strong>Supports NAT (Network Address Translation)</strong><br>Since the number of available IPv4 addresses is limited (~4.2 billion), NAT allows multiple devices to share a single public IP, helping conserve address space.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="common-use-cases-for-ipv4-proxies"></span><strong>Common Use Cases for IPv4 Proxies</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>IPv4 proxies are favored in a variety of digital tasks due to their strong compatibility, ease of deployment, and solid anonymity. Key use cases include:</p>
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||
<p><strong>Web Scraping and Data Collection</strong><br>IPv4 proxies act as a “cloak” for web crawlers. By rotating IPs, they prevent overloading target sites and reduce the risk of being blocked.</p>
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||
<p><strong>Account Registration and Multi-Account Management</strong><br>Platforms often restrict multiple accounts from the same IP. IPv4 proxies help bypass these restrictions, enabling safe operation of multiple profiles.</p>
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|
||
<p><strong>Digital Marketing and Ad Verification</strong><br>In the ad tech world, IPv4 proxies are used for:</p>
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||
<p>Simulating real user behavior to verify ad delivery.</p>
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<p>Detecting ad fraud by checking if ads appear consistently across different regions.</p>
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<p><strong>Accessing Geo-Restricted Content</strong><br>Many sites tailor or block content based on geographic location. IPv4 proxies can “relocate” your virtual presence, ensuring unrestricted global access.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="ipv4-vs-ipv6"></span><strong>IPv4 vs. IPv6</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<figure class="wp-block-table"><table class="has-fixed-layout"><tbody><tr><td><strong>Feature</strong><strong></strong></td><td><strong>IPv4</strong><strong></strong></td><td><strong>IPv6</strong><strong></strong></td></tr><tr><td>Address Length</td><td>32-bit (4 octets)</td><td>128-bit (8 groups of hex)</td></tr><tr><td>Address Quantity</td><td>~4.2 billion</td><td>Virtually unlimited</td></tr><tr><td>Format</td><td>Dotted-decimal (e.g., 192.168.0.1)</td><td>Colon-separated hex (e.g., 2001:0db8:85a3::8a2e:0370:7334)</td></tr><tr><td>NAT Support</td><td>Supported</td><td>Usually unnecessary</td></tr><tr><td>Compatibility</td><td>Universally supported</td><td>Gradually being adopted</td></tr><tr><td>Security</td><td>Requires external solutions</td><td>Built-in IPsec for enhanced security</td></tr></tbody></table></figure>
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<p>Although IPv6 is regarded as the future, IPv4 remains the primary choice for most internet users and systems today.</p>
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<h2 class="wp-block-heading"><span class="ez-toc-section" id="conclusion"></span><strong>Conclusion</strong><strong></strong><span class="ez-toc-section-end"></span></h2>
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<p>IPv4 has been the backbone of modern internet communication for decades. Its simplicity, stability, and compatibility ensure its continued relevance in a wide range of network environments. By using an IPv4 proxy, users can securely and efficiently access online resources while maintaining privacy.</p>
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<p>While IPv6 adoption continues to grow, for most users and businesses, IPv4 remains the most cost-effective and reliable option. If you need features like anonymous browsing, account management, or web scraping, a stable IPv4 proxy service such as <strong><a href="residential-proxies.html" data-type="link" data-id="https://WebIP.com/pricing/residential-proxies/">WebIP</a></strong> is a smart and practical choice.</p>
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<nav><ul class='ez-toc-list ez-toc-list-level-1 '><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-1" href="#what-is-ipv4" title="What Is IPv4?">What Is IPv4?</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-2" href="#how-does-ipv4-work" title="How Does IPv4 Work?">How Does IPv4 Work?</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-3" href="#ipv4-proxy-functionality" title="IPv4 Proxy Functionality">IPv4 Proxy Functionality</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-4" href="#advantages-and-features-of-ipv4" title="Advantages and Features of IPv4">Advantages and Features of IPv4</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-5" href="#common-use-cases-for-ipv4-proxies" title="Common Use Cases for IPv4 Proxies">Common Use Cases for IPv4 Proxies</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-6" href="#ipv4-vs-ipv6" title="IPv4 vs. IPv6">IPv4 vs. IPv6</a></li><li class='ez-toc-page-1'><a class="ez-toc-link ez-toc-heading-7" href="#conclusion" title="Conclusion">Conclusion</a></li></ul></nav></div>
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