58:75:21 CJSC RTSoft
Every MAC address from 58:75:21:00:00:00 to 58:75:21:FF:FF:FF belongs to a block the IEEE assigned to CJSC RTSoft. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 58:75:21 belongs to
Written 58:75:21, 58-75-21 or 587521, depending on the system. Look up a full address.
Prefix
58:75:21
Organization
CJSC RTSoft
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
58:75:21:00:00:00
Last address
58:75:21:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Nikitinskaya str., 3 Moscow RU 105037