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IPv6 Validator

Validate IPv6 address format and check for correctness.

Validation Results:

IPv6 Address Format Rules

  • 8 hextets: IPv6 addresses consist of 8 groups of 4 hexadecimal digits
  • Hextet format: Each group contains 1-4 hexadecimal characters (0-9, a-f, A-F)
  • Separators: Groups are separated by colons (:)
  • Compression: One sequence of consecutive zeros can be replaced with ::
  • Leading zeros: Leading zeros in hextets can be omitted

Valid Examples

Expanded

  • 2001:0db8:85a3:0000:0000:8a2e:0370:7334
  • fe80:0000:0000:0000:0202:b3ff:fe1e:8329

Compressed

  • 2001:db8:85a3::8a2e:370:7334
  • fe80::202:b3ff:fe1e:8329
  • ::1 (loopback)
  • :: (unspecified)

Common Issues

  • More than one :: in the address
  • Invalid hexadecimal characters
  • Wrong number of hextets after expansion
  • Missing colons between groups

Special IPv6 Addresses

  • ::1: Loopback address (equivalent to 127.0.0.1)
  • ::: Unspecified address (equivalent to 0.0.0.0)
  • fe80::/10: Link-local addresses
  • fc00::/7: Unique local addresses (ULA)

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