C0:D3:91:D0:00:00 to C0:D3:91:DF:FF:FF

REGULUS CO.,LTD.

MA-MJapan1,048,576 addresses
Inspect this prefix

Registered address

Yotsuya Orchid Bldg. 23-3 Daikyo-cho
Shinjuku-ku Tokyo 160-0015
Japan

Block details

Registry
MA-M, MAC Address Block Medium (OUI-28)
Prefix
C0:D3:91:D /28
Addresses in block
1,048,576
Decimal range
212,014,916,960,256 to 212,014,918,008,831
Address type
Unicast, universally administered

What this block covers

A 28 bit block. Sixteen of these fit inside one 24 bit prefix, so the first three octets are shared with other registrants.

Any MAC address between C0:D3:91:D0:00:00 and C0:D3:91:DF:FF:FF belongs to this assignment. The registrant chooses the remaining 20 bits, so the same prefix can appear on very different products from the same company.

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