That's why the world is migrating to IPv6, of which there are over 320 undecillion(!) total possible IPv6 addresses. IPv6, which looks like eight sets of four-character strings separated by colons, each string containing numbers and lowercase letters.Įven though there are 4.3 billion total possible addresses using IPv4, they're pretty much all taken and are running out. IPv4, which looks like four sets of numbers separated by periods, each number within the range of 0 to 255. When data from the internet needs to reach you, the ISP's network sees that your unique IP address is the destination, then routes that data to you. You can then access the other networks connected to your ISP.Įvery ISP has a pool of IP addresses that they manage, and when you purchase its service, you're assigned an IP address. Each network is called an Internet Service Provider (ISP), and if you purchase a service from an ISP, you can connect to that ISP's network. In simple terms, the internet consists of separate networks that are connected together.
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