MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixCC:22:37:60:00:00 /28
Vendor addressSiemensstrasse 90 Wien AT A-1210
Country🇦🇹 Austria
RegisteredJun 25, 2017
Block rangeCC:22:37:60:00:00– CC:22:37:6F:FF:FF
Address capacity1,048,576
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
Previous
CC:22:37:50:00:00 /28
Beijing Safesoft Greatmaker Co.,ltd
Next
CC:22:37:70:00:00 /28
Shanghai Doit IOT Technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Siemens AG Austria holds 2 registered blocks in the IEEE registry, ranking #3,063 of 33,427 organizations by block count.
Other blocks registered to Siemens AG Austria