What this means
The IEEE assigned the MA-L block 70BF3E to Charles River Laboratories. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 70:BF:3E, it is Charles River Laboratories hardware.
Frequently Asked Questions
Who owns MAC prefix 70BF3E?
70BF3E is registered to Charles River Laboratories in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Charles River Laboratories's block covers 16,777,216 addresses.
What devices use 70BF3E?
Any network device with a MAC address starting 70:BF:3E was manufactured by or for Charles River Laboratories.