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MAC prefix 28:80:23

Assigned by the IEEE to Hewlett Packard.

Prefix
28:80:23   28-80-23   2880.23
Block type
MA-L (16,777,216 addresses)
Address range
28:80:23:00:00:00 – 28:80:23:FF:FF:FF
Organization
Hewlett Packard
Registered address
11445 Compaq Center Drive, Houston 77070, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 28:80:23:00:00:00

Hewlett Packard holds 150 blocks in total: see all. Source: IEEE Registration Authority public listing.