Network Tools
5 tools for network engineers and administrators
Professional networking utilities for IP address analysis, subnet planning, and network design. Ideal for network engineers, system administrators, and students learning TCP/IP fundamentals. All calculations happen entirely in your browser — no data is ever sent to a server.
100% Private
No data leaves your browser
Instant Results
Real-time calculations
IPv4 & IPv6
Supports both address families
IP / CIDR Calculator
Calculate subnet mask, IP range, broadcast address, and host count for IPv4 and IPv6 networks
IP Address Converter
Convert IPv4 addresses between decimal, hexadecimal, binary, and integer representations
Subnet Visualizer
Visually split a network into subnets using VLSM, with tree diagram and address allocation
DNS Record Checker
Query DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) via DNS-over-HTTPS — no server needed