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MA-L

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

Prefix00:30:25:00:00:00 /24

Vendor addressTOWNSEND FARM ROAD UNITED GB KINGDOM

RegisteredSep 8, 2000

Block range00:30:25:00:00:00– 00:30:25: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

00:30:25:00:00:00 00:30:25:7F:FF:FF 00:30:25:FF:FF:FF

Where this block sits

Previous 00:30:24:00:00:00 /24 Cisco Systems, Inc Next 00:30:26:00:00:00 /24 HeiTel Digital Video GmbH

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

CHECKOUT COMPUTER SYSTEMS, LTD holds 1 registered blocks in the IEEE registry, ranking #8,205 of 33,427 organizations by block count.