What this means
The IEEE assigned the MA-L block 644214 to Swisscom Energy Solutions AG. 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 64:42:14, it is Swisscom Energy Solutions AG hardware.
Frequently Asked Questions
Who owns MAC prefix 644214?
644214 is registered to Swisscom Energy Solutions AG 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. Swisscom Energy Solutions AG's block covers 16,777,216 addresses.
What devices use 644214?
Any network device with a MAC address starting 64:42:14 was manufactured by or for Swisscom Energy Solutions AG.