What this means
The IEEE assigned the MA-L block 001266 to Swisscom Hospitality Services SA. 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 00:12:66, it is Swisscom Hospitality Services SA hardware.
Frequently Asked Questions
Who owns MAC prefix 001266?
001266 is registered to Swisscom Hospitality Services SA 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 Hospitality Services SA's block covers 16,777,216 addresses.
What devices use 001266?
Any network device with a MAC address starting 00:12:66 was manufactured by or for Swisscom Hospitality Services SA.