Address Tools

IPv6 Compressor / Expander

Enter an IPv6 address with or without a prefix length to view compressed, expanded, and network forms.

Examples: 2001:db8::1 or 2001:db8::/48

IPv6 Convert

Compress and expand IPv6 addresses between canonical forms.

Category
addressing
Tags
ipv6, compression

Inputs

  • An IPv6 address in any valid notation

Outputs

  • Fully expanded form (eight 16-bit groups)
  • Canonical compressed form (RFC 5952)
  • Reverse DNS (ip6.arpa) representation

Use Cases

  • Normalizing IPv6 entries for consistent logging
  • Generating PTR zones from a contiguous block
  • Comparing two addresses written in different styles

Limitations

  • Format conversion only — does not query reachability or DNS