MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix44:03:77:70:00:00 /28
Vendor addressAvenida Stara 519 Não-Me-Toque Rio Grande do Sul BR 99470000
Country🇧🇷 Brazil
RegisteredAug 15, 2019
Block range44:03:77:70:00:00– 44:03:77:7F: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
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44:03:77:60:00:00 /28
SHEN ZHEN HUAWANG TECHNOLOGY CO; LTD
Next
44:03:77:80:00:00 /28
Gemmy Electronics (Shenzhen) Co, Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Stara S/A Indústria de Implementos Agrícolas holds 2 registered blocks in the IEEE registry, ranking #3,149 of 33,427 organizations by block count.
Other blocks registered to Stara S/A Indústria de Implementos Agrícolas