INTERNATIONAL SECURITY SYSTEMS W.L.L.

MA-S

MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.

Prefix8C:1F:64:AD:60:00 /36

Vendor addressOffice 4, First Floor, ABC 3,Abu Hamour, Doha Doha QA 97400

RegisteredDec 31, 2025

Block range8C:1F:64:AD:60:00– 8C:1F:64:AD:6F:FF

Address capacity4,096

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

8C:1F:64:AD:60:00 8C:1F:64:AD:67:FF 8C:1F:64:AD:6F:FF

Where this block sits

Previous 8C:1F:64:AD:40:00 /36 Flextronics International Kft Next 8C:1F:64:AD:70:00 /36 Monnit Corporation

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

INTERNATIONAL SECURITY SYSTEMS W.L.L. holds 1 registered blocks in the IEEE registry, ranking #16,437 of 33,421 organizations by block count.