8C:1F:64:18:A0:00 to 8C:1F:64:18:AF:FF

Network Rail

MA-SUnited Kingdom4,096 addresses
Inspect this prefix

Registered address

The Quadrant, Elder Gate
Milton Keynes Buckinghamshire MK9 1EN
United Kingdom

Block details

Registry
MA-S, MAC Address Block Small (OUI-36)
Prefix
8C:1F:64:18:A /36
Addresses in block
4,096
Decimal range
154,066,451,210,240 to 154,066,451,214,335
Address type
Unicast, universally administered

What this block covers

A 36 bit block, the smallest the IEEE sells. Suited to low volume products that will never ship 4096 units of anything.

Any MAC address between 8C:1F:64:18:A0:00 and 8C:1F:64:18:AF:FF belongs to this assignment. The registrant chooses the remaining 12 bits, so the same prefix can appear on very different products from the same company.

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