NetTools
Network utilities for SysAdmins & DevOps
A collection of free, fast, and privacy-respecting network tools. No sign-up required — everything runs in your browser or via our backend APIs.
Subnet Calculator
Calculate network address, broadcast, host range, wildcard mask and binary representation for any IPv4 CIDR.
Secure Password Generator
Generate cryptographically secure passwords with configurable length, character sets and entropy analysis.
What Is My IP?
Instantly discover your public IP address and jump to geolocation details with one click.
GeoIP Lookup
Geolocate any IP address — country, region, city, ISP, ASN, coordinates and interactive map.
DNS Lookup Online
Look up A, AAAA, MX, NS, TXT, CNAME and SOA records for any domain, queried in parallel.
Quick Start
Select a tool from the sidebar or the cards above. All tools are instantly accessible — no loading screens, no cookies, no tracking.