HTTPfy

MAC prefix 00:21:3C

Assigned by the IEEE to AliphCom.

Prefix
00:21:3C   00-21-3C   0021.3C
Block type
MA-L (16,777,216 addresses)
Address range
00:21:3C:00:00:00 – 00:21:3C:FF:FF:FF
Organization
AliphCom
Registered address
150 Executive Park Blvd, San Francisco CA 94134, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 00:21:3C:00:00:00

AliphCom holds 1 block in total: see all. Source: IEEE Registration Authority public listing.