MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:06:91:00:00:00 /24
Vendor addressRua Eng. Jose F. Pinto Basto PT
Country🇵🇹 Portugal
RegisteredJun 4, 2001
Block range00:06:91:00:00:00– 00:06:91:FF:FF:FF
Address capacity16,777,216
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
00:06:90:00:00:00 /24
Euracom Communication GmbH
Next
00:06:92:00:00:00 /24
Intruvert Networks, Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
PT Inovacao holds 1 registered blocks in the IEEE registry, ranking #23,687 of 33,427 organizations by block count.