00:21:45 Semptian Technologies Ltd.
Every MAC address from 00:21:45:00:00:00 to 00:21:45:FF:FF:FF belongs to a block the IEEE assigned to Semptian Technologies Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:45 belongs to
Written 00:21:45, 00-21-45 or 002145, depending on the system. Look up a full address.
Prefix
00:21:45
Organization
Semptian Technologies Ltd.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:45:00:00:00
Last address
00:21:45:FF:FF:FF
Address type
Globally unique, unicast
Registered address
No. 809, Tower B, Shi Ji Ke Mao Beijing CN 100190