ISP Glossary Find an ISP Term

Search ISP Sites

Search: Search internet.com

ISP Resources ISP-Lists ISP Glossary ISP News CLEC-Planet The List ISPCON Free Newsletter IT Developer Internet News Small Business Personal Technology Search internet.com Advertise Corporate Info Newsletters Tech Jobs E-mail Offers internet.commerce Be a Commerce Partner

Search for an ISP term
by a keyword...	...or by category. choose one... Communications Computer Industry Companies Computer Science Data Graphics Hardware Internet and Online Services Mobile Computing Multimedia Networks Operating Systems Programming Software Standards Types of Computers World Wide Web

OUI Last modified: Wednesday, April 21, 2004
Short for Organizational Unique Identifier, the first 24 bits of a MAC address for a network-connected device, which indicate the specific vendor for that device. The IEEE assigns OUIs to vendors. (The last 24 bits of the MAC address are the device’s unique serial number, assigned to the device by the manufacturer.) The OUI sometimes is referred to as the Vendor ID.
IEEE OUI and Company_id Assignments Search the IEEE’s database of OUI assignments or download the complete list.	Related Categories Addressing Hardware Networking Hardware Related Terms bit device IEEE MAC address