https://ipducky.com/learn/ Plain-English guides to IP addresses, networking, internet history, and online privacy from IP Ducky. en https://ipducky.com/learn/history-of-the-internet/ https://ipducky.com/learn/history-of-the-internet/ History of the Internet How the internet grew from a Cold-War research project into a global network — ARPANET, TCP/IP, the World Wide Web, and the modern internet, explained. https://ipducky.com/learn/what-was-arpanet/ https://ipducky.com/learn/what-was-arpanet/ History of the Internet ARPANET was the first packet-switched network and the direct ancestor of the internet. Here's what it was, why it was built, and what it achieved. https://ipducky.com/learn/birth-of-tcp-ip/ https://ipducky.com/learn/birth-of-tcp-ip/ History of the Internet TCP/IP is the common language that lets every network on Earth interconnect. Here's the story of how Vint Cerf and Bob Kahn designed it. https://ipducky.com/learn/fathers-of-the-internet/ https://ipducky.com/learn/fathers-of-the-internet/ History of the Internet The internet had many parents. Meet the key figures — from packet-switching pioneers to the inventor of the Web — and what each of them contributed. https://ipducky.com/learn/world-wide-web-vs-internet/ https://ipducky.com/learn/world-wide-web-vs-internet/ History of the Internet People use 'the internet' and 'the Web' interchangeably, but they are not the same thing. Here's the difference, clearly explained. https://ipducky.com/learn/history-of-dns/ https://ipducky.com/learn/history-of-dns/ History of the Internet Before DNS, one hand-edited file mapped every hostname to an IP address. Here's how the Domain Name System replaced it and scaled to billions of names. https://ipducky.com/learn/how-the-internet-is-governed/ https://ipducky.com/learn/how-the-internet-is-governed/ History of the Internet No single government or company owns the internet. Here's how names, numbers, and standards are actually coordinated worldwide. https://ipducky.com/learn/history-of-web-browsers/ https://ipducky.com/learn/history-of-web-browsers/ History of the Internet From the first text browsers to Mosaic, Netscape, Internet Explorer, Firefox, and Chrome — how the window to the Web evolved. https://ipducky.com/learn/dial-up-to-broadband/ https://ipducky.com/learn/dial-up-to-broadband/ History of the Internet The screeching modem, the busy phone line, and the leap to always-on broadband. A short history of how home internet access evolved. https://ipducky.com/learn/history-of-wifi/ https://ipducky.com/learn/history-of-wifi/ History of the Internet Wi-Fi freed the internet from cables. Here's where wireless networking came from, how the standards evolved, and why it's called Wi-Fi. https://ipducky.com/learn/internet-of-things-history/ https://ipducky.com/learn/internet-of-things-history/ History of the Internet From a networked soda machine to billions of smart devices, here's how everyday objects joined the internet — and why it strained the address system. https://ipducky.com/learn/what-is-an-ip-address/ https://ipducky.com/learn/what-is-an-ip-address/ How IP Addresses Work An IP address is the number that identifies your device on a network. Here's what it is, how it works, and the difference between IPv4 and IPv6 — in plain English. https://ipducky.com/learn/public-vs-private-ip/ https://ipducky.com/learn/public-vs-private-ip/ How IP Addresses Work Your device has both a public and a private IP address. Here's what each one does, how to tell them apart, and why the difference matters. https://ipducky.com/learn/static-vs-dynamic-ip/ https://ipducky.com/learn/static-vs-dynamic-ip/ How IP Addresses Work Some IP addresses stay the same; others change over time. Here's the difference between static and dynamic IPs, and when each one is useful. https://ipducky.com/learn/how-ipv4-works/ https://ipducky.com/learn/how-ipv4-works/ How IP Addresses Work IPv4 addresses are 32-bit numbers written as four octets. Here's how they're structured, how many exist, and why we ran out. https://ipducky.com/learn/subnets-and-subnet-masks/ https://ipducky.com/learn/subnets-and-subnet-masks/ How IP Addresses Work Subnetting splits a network into smaller pieces. Here's what a subnet mask does and how to read one, without the intimidating math. https://ipducky.com/learn/what-is-cidr-notation/ https://ipducky.com/learn/what-is-cidr-notation/ How IP Addresses Work CIDR notation like 10.0.0.0/8 is a compact way to describe blocks of IP addresses. Here's how to read it and why it replaced address classes. https://ipducky.com/learn/what-is-ipv6/ https://ipducky.com/learn/what-is-ipv6/ How IP Addresses Work IPv6 is the next-generation internet addressing system with a virtually unlimited supply of addresses. Here's what it is and why it exists. https://ipducky.com/learn/ipv4-vs-ipv6/ https://ipducky.com/learn/ipv4-vs-ipv6/ How IP Addresses Work How do IPv4 and IPv6 actually differ? A side-by-side comparison of address size, format, features, and real-world use. https://ipducky.com/learn/how-ipv6-addresses-are-written/ https://ipducky.com/learn/how-ipv6-addresses-are-written/ How IP Addresses Work IPv6 addresses look intimidating, but the notation follows simple rules. Learn how to read, shorten, and expand them. https://ipducky.com/learn/what-is-nat/ https://ipducky.com/learn/what-is-nat/ How IP Addresses Work NAT lets a whole network of devices share a single public IP address. Here's how it works and why it became essential. https://ipducky.com/learn/reserved-ip-addresses/ https://ipducky.com/learn/reserved-ip-addresses/ How IP Addresses Work Not every IP address is for a public device. Learn about loopback, private ranges, link-local, and other special addresses you'll encounter. https://ipducky.com/learn/what-is-dhcp/ https://ipducky.com/learn/what-is-dhcp/ How IP Addresses Work You rarely set an IP address by hand — DHCP does it automatically. Here's how the Dynamic Host Configuration Protocol works. https://ipducky.com/learn/osi-model-explained/ https://ipducky.com/learn/osi-model-explained/ Networking Fundamentals The OSI model breaks networking into seven layers. Here's what each layer does, with plain-English examples for all seven. https://ipducky.com/learn/tcp-ip-model/ https://ipducky.com/learn/tcp-ip-model/ Networking Fundamentals The TCP/IP model is the practical four-layer framework the real internet runs on. Here's how it maps to what actually happens on the wire. https://ipducky.com/learn/tcp-vs-udp/ https://ipducky.com/learn/tcp-vs-udp/ Networking Fundamentals TCP and UDP are the two main transport protocols. One is reliable, the other is fast. Here's when each is used and why it matters. https://ipducky.com/learn/what-is-a-port-number/ https://ipducky.com/learn/what-is-a-port-number/ Networking Fundamentals Ports let one device run many network services at once. Here's what port numbers are and a rundown of the most common ones. https://ipducky.com/learn/what-is-a-mac-address/ https://ipducky.com/learn/what-is-a-mac-address/ Networking Fundamentals A MAC address is a hardware identifier burned into your network adapter. Here's how it differs from an IP address and what it's used for. https://ipducky.com/learn/how-routers-work/ https://ipducky.com/learn/how-routers-work/ Networking Fundamentals Routers are the traffic directors of the internet. Here's what they actually do, from your home box to the internet's core. https://ipducky.com/learn/switches-vs-hubs-vs-routers/ https://ipducky.com/learn/switches-vs-hubs-vs-routers/ Networking Fundamentals Switches, hubs, and routers all move network data, but they work very differently. Here's how to tell them apart. https://ipducky.com/learn/how-dns-works/ https://ipducky.com/learn/how-dns-works/ Networking Fundamentals DNS turns human-friendly names like example.com into the IP addresses computers need. Here's the whole lookup process, step by step. https://ipducky.com/learn/what-is-a-packet/ https://ipducky.com/learn/what-is-a-packet/ Networking Fundamentals The internet moves everything as packets — small, labeled chunks of data. Here's what's inside one and why packets make the internet resilient. https://ipducky.com/learn/bandwidth-vs-latency/ https://ipducky.com/learn/bandwidth-vs-latency/ Networking Fundamentals Bandwidth and latency are different measures of network performance. Here's what each means and why a high-speed connection can still feel sluggish. https://ipducky.com/learn/what-is-an-autonomous-system-bgp/ https://ipducky.com/learn/what-is-an-autonomous-system-bgp/ Networking Fundamentals The internet is a network of large networks called Autonomous Systems, stitched together by BGP. Here's how the internet's biggest layer works. https://ipducky.com/learn/what-is-reverse-dns/ https://ipducky.com/learn/what-is-reverse-dns/ Networking Fundamentals A reverse DNS lookup turns an IP address back into a hostname. Here's how PTR records work and why they matter for email and diagnostics. https://ipducky.com/learn/how-ip-geolocation-works/ https://ipducky.com/learn/how-ip-geolocation-works/ IP, Privacy & Security IP geolocation estimates your location from your IP address. Here's how it's done, how accurate it really is, and why it's frequently off. https://ipducky.com/learn/what-can-someone-do-with-your-ip/ https://ipducky.com/learn/what-can-someone-do-with-your-ip/ IP, Privacy & Security Is it dangerous if someone knows your IP address? Here's an honest look at what your IP does — and doesn't — let others do. https://ipducky.com/learn/how-to-hide-your-ip-address/ https://ipducky.com/learn/how-to-hide-your-ip-address/ IP, Privacy & Security There are three main ways to hide your IP address. Here's how VPNs, proxies, and Tor compare, and when to use each. https://ipducky.com/learn/what-is-a-vpn/ https://ipducky.com/learn/what-is-a-vpn/ IP, Privacy & Security A VPN encrypts your traffic and hides your IP address behind a server. Here's how VPNs work and what they can and can't protect. https://ipducky.com/learn/what-is-a-proxy-server/ https://ipducky.com/learn/what-is-a-proxy-server/ IP, Privacy & Security A proxy server sits between you and the internet, relaying your requests. Here's what proxies do and how they differ from VPNs. https://ipducky.com/learn/what-is-the-tor-network/ https://ipducky.com/learn/what-is-the-tor-network/ IP, Privacy & Security Tor anonymizes your traffic by routing it through multiple volunteer relays. Here's how onion routing works and what Tor is good for. https://ipducky.com/learn/does-ip-reveal-identity/ https://ipducky.com/learn/does-ip-reveal-identity/ IP, Privacy & Security Can someone identify you personally from your IP address? Here's the nuanced, accurate answer — and who actually can. https://ipducky.com/learn/what-is-an-isp/ https://ipducky.com/learn/what-is-an-isp/ IP, Privacy & Security Your internet service provider connects you to the internet — and sits in a position to see a lot. Here's what ISPs are and what they can observe. https://ipducky.com/learn/what-is-a-firewall/ https://ipducky.com/learn/what-is-a-firewall/ IP, Privacy & Security A firewall controls what network traffic is allowed in and out. Here's how firewalls work and the different types you'll encounter. https://ipducky.com/learn/what-is-localhost/ https://ipducky.com/learn/what-is-localhost/ Everyday Internet & Troubleshooting localhost and 127.0.0.1 both mean 'this computer.' Here's what the loopback address is and why developers rely on it. https://ipducky.com/learn/what-is-a-default-gateway/ https://ipducky.com/learn/what-is-a-default-gateway/ Everyday Internet & Troubleshooting The default gateway is the device your traffic goes through to reach other networks. Here's what it is and how to find it. https://ipducky.com/learn/how-to-find-router-ip/ https://ipducky.com/learn/how-to-find-router-ip/ Everyday Internet & Troubleshooting Your router's IP address is the gateway to its settings. Here's how to find it on any device and log in. https://ipducky.com/learn/what-is-port-forwarding/ https://ipducky.com/learn/what-is-port-forwarding/ Everyday Internet & Troubleshooting Port forwarding lets outside connections reach a specific device inside your network. Here's how it works and when you need it. https://ipducky.com/learn/why-does-my-ip-change/ https://ipducky.com/learn/why-does-my-ip-change/ Everyday Internet & Troubleshooting Noticed your IP address is different than before? Here's why public IP addresses change, and when they don't. https://ipducky.com/learn/anatomy-of-a-url/ https://ipducky.com/learn/anatomy-of-a-url/ Everyday Internet & Troubleshooting A URL packs a lot of information into one line. Here's what every part of a web address means, piece by piece. https://ipducky.com/learn/http-vs-https/ https://ipducky.com/learn/http-vs-https/ Everyday Internet & Troubleshooting HTTPS is the secure version of HTTP. Here's what the 'S' adds, why it matters, and why nearly all sites use it now. https://ipducky.com/learn/what-is-ssl-tls/ https://ipducky.com/learn/what-is-ssl-tls/ Everyday Internet & Troubleshooting SSL/TLS is the encryption behind HTTPS and much of the secure internet. Here's what it does and how it works, without the heavy math. https://ipducky.com/learn/what-is-a-cdn/ https://ipducky.com/learn/what-is-a-cdn/ Everyday Internet & Troubleshooting CDNs make the web fast by serving content from servers near you. Here's how they work and why nearly every big site uses one. https://ipducky.com/learn/ping-and-traceroute/ https://ipducky.com/learn/ping-and-traceroute/ Everyday Internet & Troubleshooting Ping and traceroute are the two most useful network troubleshooting tools. Here's what they do and how to read their output. https://ipducky.com/learn/what-is-dns-cache-flush/ https://ipducky.com/learn/what-is-dns-cache-flush/ Everyday Internet & Troubleshooting Your device remembers recent DNS lookups in a cache. Here's why that helps, when it causes problems, and how to clear it. https://ipducky.com/learn/what-is-cgnat/ https://ipducky.com/learn/what-is-cgnat/ Everyday Internet & Troubleshooting Some ISPs share one public IP among many customers using carrier-grade NAT. Here's what CGNAT is and how it affects you. https://ipducky.com/learn/what-is-dns-over-https/ https://ipducky.com/learn/what-is-dns-over-https/ Everyday Internet & Troubleshooting DNS over HTTPS encrypts your name lookups so others can't see or tamper with them. Here's what it is and its trade-offs. https://ipducky.com/learn/what-is-a-ddos-attack/ https://ipducky.com/learn/what-is-a-ddos-attack/ Everyday Internet & Troubleshooting A DDoS attack overwhelms a target with traffic to knock it offline. Here's how these attacks work and how they're defended against. https://ipducky.com/learn/find-ip-address-on-windows/ https://ipducky.com/learn/find-ip-address-on-windows/ Everyday Internet & Troubleshooting Find your public and private IP address on Windows 10 or 11 using Settings, the ipconfig command, or your browser — step by step. https://ipducky.com/learn/find-ip-address-on-mac/ https://ipducky.com/learn/find-ip-address-on-mac/ Everyday Internet & Troubleshooting Find your public and private IP address on macOS using System Settings, the Terminal, or your browser — a quick step-by-step guide. https://ipducky.com/learn/find-ip-address-on-iphone/ https://ipducky.com/learn/find-ip-address-on-iphone/ Everyday Internet & Troubleshooting Find your private Wi‑Fi IP address in iOS Settings and your public IP in Safari — a simple step-by-step guide for iPhone and iPad. https://ipducky.com/learn/find-ip-address-on-android/ https://ipducky.com/learn/find-ip-address-on-android/ Everyday Internet & Troubleshooting Find your private Wi‑Fi IP in Android settings and your public IP in your browser — step-by-step, for phones and tablets. https://ipducky.com/learn/how-to-change-your-ip-address/ https://ipducky.com/learn/how-to-change-your-ip-address/ Everyday Internet & Troubleshooting Six reliable ways to change your public or private IP address — from renewing your DHCP lease to using a VPN, proxy, or Tor. https://ipducky.com/learn/is-my-vpn-working/ https://ipducky.com/learn/is-my-vpn-working/ Everyday Internet & Troubleshooting Five checks that prove your VPN is actually protecting you — IP change, DNS leaks, WebRTC leaks, and time-zone mismatches. https://ipducky.com/learn/what-is-a-good-internet-speed/ https://ipducky.com/learn/what-is-a-good-internet-speed/ Everyday Internet & Troubleshooting How many Mbps you really need for streaming, gaming, video calls, and working from home — plus why upload speed and latency matter. https://ipducky.com/learn/why-does-my-ip-address-keep-changing/ https://ipducky.com/learn/why-does-my-ip-address-keep-changing/ Everyday Internet & Troubleshooting Why your public IP address changes over time — dynamic IPs, DHCP leases, ISP behavior, and IPv6 privacy — and when to expect it. https://ipducky.com/learn/router-login-192-168-1-1/ https://ipducky.com/learn/router-login-192-168-1-1/ Everyday Internet & Troubleshooting What 192.168.1.1 is and how to log into your router's admin page to change Wi‑Fi settings, passwords, and more — step by step. https://ipducky.com/learn/history-of-whats-my-ip-websites/ https://ipducky.com/learn/history-of-whats-my-ip-websites/ The 'What's My IP' Sites The single-purpose 'what's my IP' tool is a small, enduring genre of the web. Here's where it came from and how it evolved. https://ipducky.com/learn/ip-animal-websites-field-guide/ https://ipducky.com/learn/ip-animal-websites-field-guide/ The 'What's My IP' Sites Why does the 'what's my IP' genre have so many animal mascots? A friendly field guide to the creatures of the IP-lookup web. https://ipducky.com/learn/why-animal-themed-ip-tools/ https://ipducky.com/learn/why-animal-themed-ip-tools/ The 'What's My IP' Sites The 'what's my IP' genre is oddly full of animal mascots. Here's the cultural and practical reasoning behind the trend. https://ipducky.com/learn/how-whats-my-ip-tools-work/ https://ipducky.com/learn/how-whats-my-ip-tools-work/ The 'What's My IP' Sites Ever wondered how a website knows your IP address the instant you visit? Here's exactly how 'what's my IP' tools do it. https://ipducky.com/learn/anatomy-of-a-whats-my-ip-page/ https://ipducky.com/learn/anatomy-of-a-whats-my-ip-page/ The 'What's My IP' Sites Great single-purpose tools share a design DNA. Here's what makes a 'what's my IP' page work, from the giant number to the details below. https://ipducky.com/learn/from-ip-lookups-to-network-toolkits/ https://ipducky.com/learn/from-ip-lookups-to-network-toolkits/ The 'What's My IP' Sites Many 'what's my IP' sites grew into sprawling network toolkits. Here's how the genre expanded, and why minimalism still wins for many users. https://ipducky.com/learn/what-makes-a-good-ip-tool/ https://ipducky.com/learn/what-makes-a-good-ip-tool/ The 'What's My IP' Sites Not all IP-lookup tools are created equal. Here are the qualities that separate a great one from a mediocre one. https://ipducky.com/learn/ip-ducky-in-the-flock/ https://ipducky.com/learn/ip-ducky-in-the-flock/ The 'What's My IP' Sites How IP Ducky fits into the long tradition of 'what's my IP' tools — and what it does differently.