Zero Network Tools

Zero Network Tools

Zero Network Tools turns your Apple Watch into a pocket-sized network administration toolkit for IPv4, IPv6, subnet planning, device setup, troubleshooting, and field work.

Calculate IPv4 subnets from your wrist. Enter an IP address, choose a CIDR prefix, and instantly see the network address, subnet mask, usable host range, broadcast address, wildcard mask, host count, suggested gateway, and whether the address is usable, reserved, a network ID, or a broadcast address.

Use the This Watch tool to detect your watch’s current Wi-Fi or LTE IPv4 address and calculate the subnet it is connected to. Quickly confirm the network, mask, broadcast address, usable range, and address role without reaching for a laptop.

Plan networks with built-in admin tools:

• VLSM subnet planner
• DHCP scope planner
• VLAN planning notes
• Previous and next subnet navigation
• Second-IP subnet membership checker
• Saved subnet plans
• Router, switch, static device, and change-ticket templates
• Common port reference
• Private, loopback, APIPA, multicast, and reserved range reference
• IPv6 prefix calculator
• DNS A/AAAA lookup
• Binary and hexadecimal subnet math logs
• TXT, CSV, Markdown, and JSON export sharing

Zero Network Tools is useful for network admins, field technicians, homelab builders, IT students, cybersecurity learners, and anyone who works with routers, switches, VLANs, DHCP scopes, servers, printers, cameras, IoT devices, or static IP assignments.

Cool things you can do:

Check if an IP is safe to assign
Find out if an address is a broadcast address
Detect the subnet your watch is currently using
Build DHCP scopes after reserved infrastructure addresses
Plan VLANs and document gateway settings
Generate device registration notes
Compare binary and hexadecimal subnet math
Look up common service ports like SSH, FTP, NFS, NNTP, DNS, DHCP, RDP, VPN, and more
Resolve DNS records from your watch
Export subnet records for tickets, documentation, or sharing

Built for quick checks, real network work, and learning subnet math anywhere.