Subnetic

Subnetic is the fast, private subnet calculator for network engineers, admins, and students.

Type any IPv4 address or CIDR and instantly get the network, broadcast, subnet mask, wildcard, usable host range, host counts, address class and scope — plus a live binary breakdown that highlights the network and host bits. It updates as you type, and a prefix slider lets you sweep /0 to /32 in a tap.

Everything runs 100% on-device. No accounts, no network calls, no tracking — your addressing stays yours.

INCLUDED

• IPv4 / CIDR calculator with full results
• Live binary breakdown (network vs host bits)
• Dotted-mask and prefix input, RFC 3021 (/31) and /32 aware
• Tap any value to copy

SUBNETIC PRO (one-time purchase)

• Subnet Splitter — divide a block into equal subnets, or pack it by host requirement with VLSM
• IPv6 calculator — prefix, range, expand/compress, address counts
• Export & Copy All — copy every field at once or share results as text

Built with native Apple frameworks and a calm, modern design. No subscriptions — Pro is a single purchase, yours forever.