What this means
The IEEE assigned the MA-L block 00213E to TomTom International BV. 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 00:21:3E, it is TomTom International BV hardware.
Frequently Asked Questions
Who owns MAC prefix 00213E?
00213E is registered to TomTom International BV 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. TomTom International BV's block covers 16,777,216 addresses.
What devices use 00213E?
Any network device with a MAC address starting 00:21:3E was manufactured by or for TomTom International BV.