mac address lookup @ thaemlitz.com
mac address lookup
enter a MAC address to see the manufacturer of the NIC. Now you can do the opposite, enter a manufacturer to see the mac address' of that organization.
manufacturer data is based on IEEE's listing of OUI/MA-L. The OUI is a 24-bit number that uniquely identifies a vendor, manufacturer, or other organization. the first three octets of the address are the OUI.
Tested in     
( eg : 00-17-6E-46-46-46 or 0180.c200.0000 )
if you want to calculate network IP subnets, try my javascript subnet calculator page.
In 1984 in RFC 922 IP broadcasts were defined, 802.2/3 defined them for Ethernet 4 years prior.
Group MAC address value Organization using the value Standard using the value Notes
FF-FF-FF-FF-FF-FF RFC 922 Broadcast Broadcast address
Ethernet frames that contain IP broadcast packages are usually sent to FF-FF-FF-FF-FF-FF.
IEEE Std 802.1D and IEEE Std 802.1Q Reserved Addresses
Group MAC address value Organization using the value Standard using the value Notes
01-80-C2-00-00-00 IEEE 802 IEEE Std 802.1Q
IEEE Std 802.1X
IEEE Std 802.1AE
IEEE Std 802.1AX		 Bridge Group address
Nearest Customer Bridge group address
01-80-C2-00-00-01 IEEE 802 IEEE Std 802.1Q IEEE MAC-specific Control Protocols group address
01-80-C2-00-00-02 IEEE 802 IEEE Std 802.1Q
IEEE Std 802.1AX		 IEEE 802.3 Slow_Protocols_Multicast address
01-80-C2-00-00-03 IEEE 802 IEEE Std 802.1Q
IEEE Std 802.1X
IEEE Std 802.1AE
IEEE Std 802.1AX
IEEE Std 802.1BR		 Nearest non-TPMR Bridge group address
IEEE Std 802.1X PAE address
01-80-C2-00-00-04 IEEE 802 IEEE Std 802.1Q IEEE MAC-specific Control Protocols group address
01-80-C2-00-00-05 IEEE 802 IEEE Std 802.1Q Reserved for future standardization
01-80-C2-00-00-06 IEEE 802 IEEE Std 802.1Q Reserved for future standardization
01-80-C2-00-00-07 IEEE 802 IEEE Std 802.1Q MEF Forum ELMI protocol group addressa
01-80-C2-00-00-08 IEEE 802 IEEE Std 802.1Q Provider Bridge group address
01-80-C2-00-00-09 IEEE 802 IEEE Std 802.1Q Reserved for future standardization
01-80-C2-00-00-0A IEEE 802 IEEE Std 802.1Q Reserved for future standardization
01-80-C2-00-00-0B IEEE 802 IEEE Std 802.1Q
IEEE Std 802.1X
IEEE Std 802.1AE		 EDE-SS PEP Address
01-80-C2-00-00-0C IEEE 802 IEEE Std 802.1Q Reserved for future standardization
01-80-C2-00-00-0D IEEE 802 IEEE Std 802.1Q Provider Bridge MVRP address
01-80-C2-00-00-0E IEEE 802 IEEE Std 802.1Q
IEEE Std 802.1X
IEEE Std 802.1AE
IEEE Std 802.1AS		 Individual LAN Scope group addressb
Nearest Bridge group address
01-80-C2-00-00-0F IEEE 802 IEEE Std 802.1Q Reserved for future standardization
Standard Group MAC Addresses
Group MAC address value Organization using the value Standard using the value Notes
01-80-C2-00-00-00 —
01-80-C2-00-00-0F		 IEEE 802 IEEE Std 802.1Q IEEE Std 802.1Q reserved addresses
01-80-C2-00-00-10 IEEE 802 IEEE Std 802.1D All LANs Bridge Management Group Address (deprecated)
01-80-C2-00-00-11 IEEE 802 IEEE Std 802.1E Load Server Generic Address
01-80-C2-00-00-12 IEEE 802 IEEE Std 802.1E Loadable Device Generic Address
01-80-C2-00-00-13 IEEE 1905 IEEE Std 1905.1 Transmission of IEEE 1905.1 control packets
01-80-C2-00-00-14 ISO/IEC JTC1/SC6 ISO/IEC 10589 All Level 1 Intermediate Systems Address
01-80-C2-00-00-15 ISO/IEC JTC1/SC6 ISO/IEC 10589 All Level 2 Intermediate Systems Address
01-80-C2-00-00-16 ISO/IEC JTC1/SC6 ISO/IEC 10030 All CONS End Systems Address
01-80-C2-00-00-17 ISO/IEC JTC1/SC6 ISO/IEC 10030 All CONS SNARES Address
01-80-C2-00-00-18 IEEE 802 IEEE Std 802.1B Generic Address for All Manager Stations
01-80-C2-00-00-19 IEEE 802 IEEE Std 802.11aa Groupcast with retries (GCR) MAC Group Address
01-80-C2-00-00-1A IEEE 802 IEEE Std 802.1B Generic Address for All Agent Stations
01-80-C2-00-00-1B ISO/IEC JTC1/SC6 ISO/IEC 9542 All Multicast Capable End Systems Address
01-80-C2-00-00-1C ISO/IEC JTC1/SC6 ISO/IEC 9542 All Multicast Announcements Address
01-80-C2-00-00-1D ISO/IEC JTC1/SC6 ISO/IEC 9542 All Multicast Capable Intermediate Systems Address
01-80-C2-00-00-1E ISO/IEC JTC1/SC6 ISO/IEC 8802-5 All DTR Concentrators MAC Group Address
01-80-C2-00-00-1F IEEE 802 IEEE Std 802.1X
IEEE Std 802.1AE		 EDE-CC PEP Address
01-80-C2-00-00-20 —
01-80-C2-00-00-2F		 IEEE 802 IEEE Std 802.1Q Reserved for use by Multiple Registration Protocol (MRP) applications
01-80-C2-00-00-30 —
01-80-C2-00-00-3F		 IEEE 802 IEEE Std 802.1Q Destination group MAC addresses for CCM and Linktrace messages
01-80-C2-00-00-40 —
01-80-C2-00-00-4F		 IETF TRILL Group MAC addresses used by the TRILL protocols
01-80-C2-00-00-50 —
01-80-C2-00-00-FF		 unassigned
01-80-C2-00-01-00 ISO/IEC JTC1/SC25 ISO/IEC 9314-6 Ring Management Directed Beacon Multicast Address
01-80-C2-00-01-01 —
01-80-C2-00-01-0F		 ISO/IEC JTC1/SC25 Assigned to ISO/IEC JTC1/SC25 for future use
01-80-C2-00-01-10 ISO/IEC JTC1/SC25 ISO/IEC 9314-6 Status Report Frame Status Report Protocol Multicast Address
01-80-C2-00-01-11 —
01-80-C2-00-01-1F		 ISO/IEC JTC1/SC25 Assigned to ISO/IEC JTC1/SC25 for future use
01-80-C2-00-01-20 ISO/IEC JTC1/SC25 ISO/IEC 9314-2 All FDDI Concentrator MACs
01-80-C2-00-01-21 —
01-80-C2-00-01-2F		 ISO/IEC JTC1/SC25 Assigned to ISO/IEC JTC1/SC25 for future use
01-80-C2-00-01-30 ISO/IEC JTC1/SC25 ISO/IEC 9314-6 Synchronous Bandwidth Allocation Address
01-80-C2-00-01-31 —
01-80-C2-00-01-FF		 ISO/IEC JTC1/SC25 Assigned to ISO/IEC JTC1/SC25 for future use
01-80-C2-00-02-00 —
01-80-C2-00-02-FF		 ETSI Assigned to ETSI for future use
01-80-C2-00-03-00 —
01-80-C2-FF-FF-FF		 unassigned
09-00-2B-00-00-04
 ISO/IEC JTC1/SC6 ISO 9542 All End System Network Entities Address
09-00-2B-00-00-05 ISO/IEC JTC1/SC6 ISO 9542 All Intermediate System Network Entities Address
Group MAC Addresses Used in ISO 9542 ES-IS Protocol
Group MAC address value Organization using the value Standard using the value Notes
09-00-2B-00-00-04
 ISO/IEC JTC1/SC6 ISO 9542 All End System Network Entities Address
09-00-2B-00-00-05 ISO/IEC JTC1/SC6 ISO 9542 All Intermediate System Network Entities Address
Locally Administered Group MAC Addresses Used by IEEE Std 802.5
Group MAC address value Organization using the value Standard using the value Notes
03-00-00-00-00-08 IEEE 802 IEEE Std 802.5 Configuration Report Server (CRS) MAC Group Address
03-00-00-00-00-10 IEEE 802 IEEE Std 802.5 Ring Error Monitor (REM) MAC Group Address
03-00-00-00-00-40 IEEE 802 IEEE Std 802.5 Ring Parameter Server (RPS) MAC Group Address
03-00-00-00-01-00 IEEE 802 ISO 9542 All Intermediate System Network Entities Address
03-00-00-00-02-00 ISO/IEC JTC1/SC6,
IEEE 802		 ISO 9542, and
IEEE Std 802.5		 All End System Network Entities Address, and Lobe Media Test (LMT) MAC Group Address
03-00-00-00-04-00 IEEE 802 IEEE Std 802.1B Generic Address for all Manager Stations
03-00-00-00-08-00 IEEE 802 ISO/IEC 10030 All CONs SNARES Address
03-00-00-00-10-00 IEEE 802 ISO/IEC 10030 All CONs End System Address
03-00-00-00-20-00 IEEE 802 IEEE Std 802.1E Loadable Device Generic Address
03-00-00-00-40-00 IEEE 802 IEEE Std 802.1E Load Server Generic Address
03-00-00-40-00-00 IEEE 802 IEEE Std 802.1B Generic Address for all Agent Stations
my favorites
unfortunately serveral of these companies are now gone, but you were once the big boys in the business. A personal thank you to NeXT and Sun!
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