Network Tools
Free network utilities for IP addressing, subnetting, DNS, RDAP, HTTP headers, and connectivity checks. The V1 catalog is visible below; tools marked Coming soon are intentionally not linked until their implementations are ready.
Find a network tool
Search stays in your browser. Press / to focus search and Escape to clear it.
Featured
Editorial picks planned for the V1 catalog.
Categories
Choose a category to filter the planned inventory. Choose it again to show all.
All Available Tools
Only implemented and verified routes appear as links here.
Coming Soon
Planned V1 tools. These cards are deliberately non-clickable.
How these tools will run
Browser-local calculations will stay on-device where practical. Future standards-based or controlled network lookups will clearly identify their execution and privacy behavior when those tools are implemented.
All 26 network tools
Browse IP addressing, subnetting, DNS, registration, and connectivity utilities. Local calculations stay in your browser where practical; network lookups use the service only when a remote request is necessary.
- What Is My IP
- My IP Details
- IPv4 Validator
- IPv6 Validator
- IPv4 ↔ Binary Converter
- CIDR ↔ Subnet Mask Converter
- Network / Broadcast Calculator
- Usable Hosts Calculator
- Subnet Calculator
- CIDR Calculator
- IP Range Calculator
- Wildcard Mask Calculator
- DNS Lookup
- A Record Lookup
- AAAA Record Lookup
- MX Lookup
- TXT Lookup
- NS Lookup
- CNAME Lookup
- SOA Lookup
- Reverse DNS / PTR Lookup
- Domain RDAP Lookup
- IP RDAP Lookup
- ASN Lookup
- HTTP Headers Checker
- TCP Port Checker