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MAC prefix 18:78:D4

Assigned by the IEEE to Verizon.

Prefix
18:78:D4   18-78-D4   1878.D4
Block type
MA-L (16,777,216 addresses)
Address range
18:78:D4:00:00:00 – 18:78:D4:FF:FF:FF
Organization
Verizon
Registered address
One Verizon Way, Basking Ridge NJ 07920, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 18:78:D4:00:00:00

Verizon holds 3 blocks in total: see all. Source: IEEE Registration Authority public listing.