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MAC prefix 4C:EF:C0

Assigned by the IEEE to Amazon Technologies Inc..

Prefix
4C:EF:C0   4C-EF-C0   4CEF.C0
Block type
MA-L (16,777,216 addresses)
Address range
4C:EF:C0:00:00:00 – 4C:EF:C0:FF:FF:FF
Organization
Amazon Technologies Inc.
Registered address
P.O Box 8102, Reno NV 89507, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 4C:EF:C0:00:00:00

Amazon Technologies Inc. holds 161 blocks in total: see all. Source: IEEE Registration Authority public listing.