MAC Address Generator
Network & Ops · Free Online Tool
Generate random or OUI-based MAC addresses.
Locally Administered
Sets the L/A bit (bit 1 of byte 0) so addresses never collide with real vendor OUIs.
Secure Randomness
Uses crypto.getRandomValues for unbiased bytes.
Custom Format
Toggle between colon/hyphen separators and upper/lowercase.
How to Use MAC Address Generator
- 1Enter the URL, IP address, or network parameter to look up.
- 2Click the lookup or test button.
- 3Review the detailed results in the output panel.
- 4Use the information for your network operations.
Features
- ✓100% free — no signup, no subscription, no ads
- ✓Runs entirely in your browser — data never leaves your device
- ✓Fast and lightweight — instant results
- ✓Cross-platform — works on desktop, tablet, and mobile
Frequently Asked Questions
Are network lookups real-time?
Yes, IP lookups, DNS queries, and HTTP tests perform live network requests to provide current data.
Is my IP address logged?
The IP Lookup tool queries public geolocation APIs. We do not store your IP address or lookup history.
Related Tools
IP Lookup
Query IP address geolocation and ISP info.
Subnet Calculator
Calculate IPv4 subnet details from CIDR.
DNS Lookup
Query DNS records via Google DNS over HTTPS.
User-Agent Parser
Parse browser, OS, and device from UA string.
HTTP Status Codes
Reference for all HTTP status codes.
HTTP Request Tester
Send GET/POST/PUT/DELETE requests and inspect responses.
Learn the concept
Learn the concept
Understand the programming ideas behind this tool.