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MAC prefix 00:21:DD

Assigned by the IEEE to Northstar Systems Corp.

Prefix
00:21:DD   00-21-DD   0021.DD
Block type
MA-L (16,777,216 addresses)
Address range
00:21:DD:00:00:00 – 00:21:DD:FF:FF:FF
Organization
Northstar Systems Corp
Registered address
5F, No.200 Gang Qian Rd, Taipei 114, TW
Country
Taiwan (TW)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up 00:21:DD:00:00:00

Northstar Systems Corp holds 1 block in total: see all. Source: IEEE Registration Authority public listing.