MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
MAC address B4:37:D1:9 (Nanjing yuekong Intelligent Technology)
MAC address prefix B4:37:D1:9 is registered to Nanjing yuekong Intelligent Technology, located at Room 923, No.2 Building, Deying International Square, No.222, Changhon, Nanjing Jiangsu 210012, CN. This registration is classified as MA-M (MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20). The prefix was registered on 05 February 2016, and no subsequent updates have been recorded.
Vendor & Registry Dossier
Assigned Prefix
B4:37:D1:9
Registrant / Organization
Registry Chronology
Initial registration: 05 February 2016
Assignment Classification
MA-M
(MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20)
Registered Location
Country: China (CN)
Headquarters Registered Facility 🇨🇳 CN
Room 923
No.2 Building
Deying International Square
No.222
Changhon
Nanjing Jiangsu 210012
CN.
No.2 Building
Deying International Square
No.222
Changhon
Nanjing Jiangsu 210012
CN.
REST API v2
200 OK
CLI
curl -s https://api.maclookup.app/v2/macs/b437d19 -H 'Accept: application/json'{
"success": true,
"found": true,
"macPrefix": "B437D19",
"company": "Nanjing yuekong Intelligent Technology",
"address": "Room 923, No.2 Building, Deying International Square, No.222, Changhon, Nanjing Jiangsu 210012, CN",
"country": "CN",
"blockStart": "B437D1900000",
"blockEnd": "B437D19FFFFF",
"blockSize": 1048575,
"blockType": "MA-M",
"updated": "2016-02-05",
"isRand": false,
"isPrivate": false
}