Olssen B.V.

MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

PrefixA4:4F:29:10:00:00 /28

Vendor addressSchrank 9 Hardinxveld-Giessendam Zuid-Hollland NL 3371KJ

RegisteredOct 16, 2015

Block rangeA4:4F:29:10:00:00– A4:4F:29:1F: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

A4:4F:29:10:00:00 A4:4F:29:17:FF:FF A4:4F:29:1F:FF:FF

Where this block sits

Previous A4:4F:29:00:00:00 /28 Dermalog Identification Systems GmbH Next A4:4F:29:20:00:00 /28 LUCEOR

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Olssen B.V. holds 1 registered blocks in the IEEE registry, ranking #21,939 of 33,427 organizations by block count.