44:03:77:B Hangzhou Asia Infrastructure Tech. Co., Ltd.
Every MAC address from 44:03:77:B0:00:00 to 44:03:77:BF:FF:FF belongs to a block the IEEE assigned to Hangzhou Asia Infrastructure Tech. Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 44:03:77:B belongs to
Written 44:03:77:B, 44-03-77-B or 440377B, depending on the system. Look up a full address.
Prefix
44:03:77:B/28
Organization
Hangzhou Asia Infrastructure Tech. Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
44:03:77:B0:00:00
Last address
44:03:77:BF:FF:FF
Address type
Globally unique, unicast
Registered address
No.7 Xiyuan Rd, Sandun Town, Westlake District Hangzhou Zhejiang CN 310000
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.