44:03:77:5 Norden Communication UK Ltd.
Every MAC address from 44:03:77:50:00:00 to 44:03:77:5F:FF:FF belongs to a block the IEEE assigned to Norden Communication UK Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 44:03:77:5 belongs to
Written 44:03:77:5, 44-03-77-5 or 4403775, depending on the system. Look up a full address.
Prefix
44:03:77:5/28
Organization
Norden Communication UK Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
44:03:77:50:00:00
Last address
44:03:77:5F:FF:FF
Address type
Globally unique, unicast
Registered address
Unit-13, Baker Close, Oakwood Business Park Clacton-On-Sea Essex GB CO15 4BD
Parent block
Inside 44:03:77
This MA-M block is carved from the 24-bit block 44:03:77, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.