The "CF" series MAC addresses | FAQ | MAC Address Vendor Lookup
Frequently asked questions

The "CF" series MAC addresses

The OUIs prefixed "CF" (CF:00:00 to CF:FF:FF) are reserved by IANA for use in the Point-to-Point Protocol (PPP) or when vendors don't need an IEEE-assigned OUI.

These OUIs are both multicast and locally administered at the same time.

Summary

Range or Prefix Application
CF:00:00:00:00:00 - CF:00:00:FF:FF:FF Reserved
CF:00:00:00:00:00 Used for Ethernet loopback tests

References

Manifest Data – Making your data reliable

Don’t be caught off guard by broken pipelines, poor code, or user interactions that corrupt your data. Install Manifest Data, and you will know about issues before anyone. You can fix data problems silently before the business or customers are affected. Then get some rest!

Learn More

Trusted by the following companies

Flex.com webafrica.co.za wework.com guarddog.ai cybercns.com

and many more...

Download an exhaustive MAC Address Vendor Database for your educational, business or enterprise needs.

Our database comes in the following forms: JSON, CSV, XML, Cisco vendorMacs.xml for maximum compatibility and fast integration into existing systems.

Order database
The data was just refreshed