MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
MAC address 00:0C:21 (Faculty of Science and Technology, Keio University)
MAC address prefix 00:0C:21 is registered to Faculty of Science and Technology, Keio University, located at 3-14-1 Hiyoshi, Kohoku-ku, Yokohama Kanagawa 223-8522, JP. This registration is classified as MA-L (MAC Address Block Large) containing 16,777,216 MAC addresses (2^24). The prefix was initially registered on 07 February 2003, with the most recent update made on 17 November 2015.
Vendor & Registry Dossier
Assigned Prefix
00:0C:21
Registrant / Organization
Registry Chronology
Initial registration: 07 February 2003
Last updated: 17 November 2015
Assignment Classification
MA-L
(MAC Address Block Large) containing 16,777,216 MAC addresses (2^24)
Registered Location
Country: Japan (JP)
Headquarters Registered Facility 🇯🇵 JP
3-14-1 Hiyoshi
Kohoku-ku
Yokohama Kanagawa 223-8522
JP.
Kohoku-ku
Yokohama Kanagawa 223-8522
JP.
REST API v2
200 OK
CLI
curl -s https://api.maclookup.app/v2/macs/000c21 -H 'Accept: application/json'{
"success": true,
"found": true,
"macPrefix": "000C21",
"company": "Faculty of Science and Technology, Keio University",
"address": "3-14-1 Hiyoshi, Kohoku-ku, Yokohama Kanagawa 223-8522, JP",
"country": "JP",
"blockStart": "000C21000000",
"blockEnd": "000C21FFFFFF",
"blockSize": 16777215,
"blockType": "MA-L",
"updated": "2015-11-17",
"isRand": false,
"isPrivate": false
}