B4:37:D1:C NANJING PUTIAN TELECOMMUNICATIONS TECHNOLOGY CO.,LTD.
Every MAC address from B4:37:D1:C0:00:00 to B4:37:D1:CF:FF:FF belongs to a block the IEEE assigned to NANJING PUTIAN TELECOMMUNICATIONS TECHNOLOGY CO.,LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:37:D1:C belongs to
Written B4:37:D1:C, B4-37-D1-C or B437D1C, depending on the system. Look up a full address.
Prefix
B4:37:D1:C/28
Organization
NANJING PUTIAN TELECOMMUNICATIONS TECHNOLOGY CO.,LTD.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
B4:37:D1:C0:00:00
Last address
B4:37:D1:CF:FF:FF
Address type
Globally unique, unicast
Registered address
No.1 Putian Road,Yuhuamenwai,Nanjing Nan Jing Jiang Su CN 210022
Parent block
Inside B4:37:D1
This MA-M block is carved from the 24-bit block B4:37:D1, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to NANJING PUTIAN TELECOMMUNICATIONS TECHNOLOGY CO.,LTD.
1 more block registered under the same name.