![]() He has been running video game servers from home for more than 10 years using Windows, Ubuntu, or Raspberry Pi OS. Nick's love of tinkering with computers extends beyond work. In college, Nick made extensive use of Fortran while pursuing a physics degree. Before How-To Geek, he used Python and C++ as a freelance programmer. He has been using computers for 20 years - tinkering with everything from the UI to the Windows registry to device firmware. Nick Lewis is a staff writer for How-To Geek. Reserved IP addresses, like most internet standards, are established via documents called Requests for Comment, or RFCs. Reserving addresses for specific purposes makes it easy to establish general rules and behaviours for different IP addresses. ![]() ![]() The successor to IPv4, IPv6, has more than 10^38 addresses available - enough for every grain of sand on Earth, every star in the observable universe, and every atom in every person's body to each have a unique IP address, with plenty left over.ĭespite the huge number of IP addresses now available, it is convenient to reserve some addresses, or even ranges (usually called blocks) of addresses, for specific purposes to prevent programming conflicts. Internet Protocol Version 4 (IPv4), which have been in use for decades, allows for nearly 4.3 billion such addresses. They identify and communicate with each other using IP addresses, which are conceptually similar to phone numbers. The Internet is made up of billions of devices.
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