00:19:81 Vivox Inc
Every MAC address from 00:19:81:00:00:00 to 00:19:81:FF:FF:FF belongs to a block the IEEE assigned to Vivox Inc. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:19:81 belongs to
Written 00:19:81, 00-19-81 or 001981, depending on the system. Look up a full address.
Prefix
00:19:81
Organization
Vivox Inc
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:19:81:00:00:00
Last address
00:19:81:FF:FF:FF
Address type
Globally unique, unicast
Registered address
40 Speen Street Framingham MA US 01701