30:1F:9A:A HUNAN CHANGSHA HENGJIAN TECHNOLDGY DEVELPMENT CO.,LTD.
Every MAC address from 30:1F:9A:A0:00:00 to 30:1F:9A:AF:FF:FF belongs to a block the IEEE assigned to HUNAN CHANGSHA HENGJIAN TECHNOLDGY DEVELPMENT CO.,LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 30:1F:9A:A belongs to
Written 30:1F:9A:A, 30-1F-9A-A or 301F9AA, depending on the system. Look up a full address.
Prefix
30:1F:9A:A/28
Organization
HUNAN CHANGSHA HENGJIAN TECHNOLDGY DEVELPMENT CO.,LTD.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
30:1F:9A:A0:00:00
Last address
30:1F:9A:AF:FF:FF
Address type
Globally unique, unicast
Registered address
Jiayun Road 209 Changsha Hunan CN 410205
Parent block
Inside 30:1F:9A
This MA-M block is carved from the 24-bit block 30:1F:9A, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.