Generate one or many random MAC addresses for testing
MAC Address Collection
MAC Address Tools Hub
Generate MAC addresses, look up OUI vendors, and generate ports and IP addresses in one place.
A practical MAC address toolkit for network diagnostics, device management and development. Generate random MAC addresses, look up the vendor (OUI) behind a MAC, produce batch MAC lists, plus random ports, IPv4 format conversion and IPv6 ULA prefix generation. Everything runs locally in your browser with no upload.
5Curated tools
2Workflows
3FAQ answers
Built for these intents
Look up the device vendor (OUI) from a MAC address
Assign unique MACs to VMs, containers or devices
Generate usable ports or convert IP address formats along the way
Tools in this hub
MAC Address Generator
Bulk-generate spec-compliant random MAC addresses with a vendor OUI prefix and colon, hyphen or dot separators, then copy the whole batch in one click.
MAC Address Vendor Lookup
Look up the vendor, country and organization behind any MAC address by OUI prefix using the IEEE registry. Paste a full address or just the first three bytes.
Random Port Generator
Pick valid non-system ports in one click with bulk export, dedupe and range filtering. Choose your own range filter reserved ports batch-generate Choose.
IPv4 Address Converter
Convert IPv4 between dotted, decimal, hex and binary formats with reverse DNS, useful for network debugging, protocol analysis and subnet planning work.
IPv6 ULA Generator
Generate IPv6 unique local addresses in the fd00::/8 range with a custom subnet ID and EUI-64, for homelabs and private networks that stay stable over time.
Suggested workflows
Device identification
Generate a random MAC, then verify the OUI format with a vendor lookup.
Network address planning
Beyond MAC, generate random ports and IPv4/IPv6 addresses to cover address-class diagnostics.
Why a MAC hub
Generate and verify together
After generating a random MAC, run a vendor lookup immediately to confirm the OUI format is valid instead of typing it by hand.
Covers frequent network actions
MAC generation, vendor lookup, port and IP generation often appear in the same device troubleshooting session.
Local and reliable
Address generation and parsing run entirely in the browser, so it works offline too.
MAC tools FAQ
Can random MAC addresses be used in production?
Random MACs are fine for testing and development; for real devices follow the vendor-assigned MAC rules to avoid address conflicts.
Is MAC vendor lookup always accurate?
It depends on the bundled OUI database; common vendors are usually recognized, while some newly assigned ranges may be missing.
Do generated MACs leave the browser?
No. MAC generation and lookup run locally and your input is not uploaded.