RFC 5952 IPv6圧縮表記&サブネット技術ガイド
IPv6アドレスの表記規格、RFC 5952に基づくゼロ圧縮(::記法)、32桁フル展開、128bit整数値変換、逆引きDNS PTRの解説。
2001:db8::ff00:42:8329/64
2001:0db8:0000:0000:0000:ff00:0042:8329/64
42540766411282592856904265327123268393
9.2.3.8.2.4.0.0.0.0.f.f.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa.
Private Local Calculation
Your network architecture and internal IPv6 subnet topology are parsed and transformed locally without leaving your browser sandbox.
RFC 5952 Standards Compliance
Applies canonical compression: collapses the longest contiguous sequence of zeros, suppresses leading zeros, and outputs lowercase hex.
Instant Multi-Format Output
Simultaneously produces 128-bit decimal integers, fully padded 32-digit expansions, and reverse DNS PTR records for BIND and Unbound.