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MAC prefix E4:1F:13

Assigned by the IEEE to IBM Corp.

Prefix
E4:1F:13   E4-1F-13   E41F.13
Block type
MA-L (16,777,216 addresses)
Address range
E4:1F:13:00:00:00 – E4:1F:13:FF:FF:FF
Organization
IBM Corp
Registered address
3039 E Cornwallis Road, Research Triangle Park NC 27709-2195, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up E4:1F:13:00:00:00

IBM Corp holds 28 blocks in total: see all. Source: IEEE Registration Authority public listing.