SubnetCalc Pro

New in 1.3 — full IPv6 support, a Home Screen widget, Siri Shortcuts, a Bonjour browser, and a Share Extension that turns any IP you find on the web into an instant subnet breakdown. NEW • IPv6 calculator — parse any form (::, embedded IPv4, zone IDs), see compressed & expanded notation, scope (link-local, ULA, multicast, global), and derive SLAAC/EUI-64 from a MAC. • MAC OUI vendor lookup — offline database of ~250 common vendors (Apple, Cisco, AVM, Ubiquiti, Raspberry Pi…) with U/L and multicast flags. • Reverse DNS (PTR) — resolve hostnames from IPv4 or IPv6 addresses. • Bonjour / mDNS browser — discover printers, AirPlay, SSH, HomeKit and more on your local network. • Siri Shortcuts — calculate subnets, look up IPs, or find MAC vendors with your voice. • Home Screen widget — your current local and public IP at a glance. • Share Extension — select any IP in Safari or Mail for an instant subnet breakdown. FIXED • Correct host counts for /31 (RFC 3021 point-to-point) and /32 single-host routes. • VLSM handles exact-fit allocations without overflow and aligns to the network boundary. • Hardened bit-shift math for /0 and /32 edge cases.