HTTPfy

MAC prefix 00:18:B1

Assigned by the IEEE to IBM Corp.

Prefix
00:18:B1   00-18-B1   0018.B1
Block type
MA-L (16,777,216 addresses)
Address range
00:18:B1:00:00:00 – 00:18:B1:FF:FF:FF
Organization
IBM Corp
Registered address
2051 Mission College Blvd, Santa Clara CA 95054, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 00:18:B1:00:00:00

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