FERRANTI COMPUTER SYS. LIMITED

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix08:00:40:00:00:00 /24

Vendor addressWYTHENSHAWE DIVISION UNITED GB KINGDOM

RegisteredSep 8, 2000

Block range08:00:40:00:00:00– 08:00:40: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

08:00:40:00:00:00 08:00:40:7F:FF:FF 08:00:40:FF:FF:FF

Where this block sits

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

FERRANTI COMPUTER SYS. LIMITED holds 1 registered blocks in the IEEE registry, ranking #12,616 of 33,427 organizations by block count.