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Tuesday, October 20, 2020

IPv4 uses 32bits. How many bits does IPv6 use?

IPv4 uses 32bits. How many bits does IPv6 use?

  • 64
  • 256
  • 32
  • 128 

 

IPv4 uses 32bits. How many bits does IPv6 use?

EXPLANATION

The size of an IPv6 address is 128 bits, compared to 32 bits in IPv4. 

The address space therefore has 2128 = 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses (approximately 3.4×1038). Some blocks of this space and some specific addresses are reserved for special uses.

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