MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixE8:F6:D7:30:00:00 /28
Vendor addressHeinz-Ziehl-Strasse 1 Kuenzelsau DE 74653
Country🇩🇪 Germany
RegisteredOct 6, 2025
Block rangeE8:F6:D7:30:00:00– E8:F6:D7:3F: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
E8:F6:D7:20:00:00 /28
Jinan Ruolin Video Technology Co., Ltd
Next
E8:F6:D7:40:00:00 /28
Xiphos Systems Corp.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ZIEHL-ABEGG SE holds 2 registered blocks in the IEEE registry, ranking #3,494 of 33,427 organizations by block count.
Other blocks registered to ZIEHL-ABEGG SE