Find the Ethernet Hardware Address of the Ethernet Card

An Ethernet hardware address is a unique 12-digit hexadecimal (0-9, A-F) number that identifies your Ethernet adapter. Manufacturers assign Ethernet addresses to identify each machine on the network. Here is a sample Ethernet address: 00001D1298AC. Some systems write this as: 00:00:1D:12:98:AC, 00-00-1D-12-98-AC, or 0000.1d12.98ac. A hardware address is always exactly 12 hexadecimal numbers. Any leading zeroes are significant and must be entered. All users must register their Ethernet address to obtain an IP address and a hostname. Sometimes you can find the hardware address printed on a sticker on the card itself. Otherwise, depending on the system, you can use one of the following methods:

• For PC/Windows 95/98/Me: From Start > Run, then type winipcfg. The Ethernet Hardware Address is listed in the Adapter Address field. winipcfg is part of Microsoft TCP/IP for Windows 95/98/Me. For details on how to install TCP/IP from the Microsoft Windows 95/98/Me distribution, please consult the AcIS Internet Software & Manual for Windows 95/98, Microsoft Windows 95/98/Me documentation, or a Residential Consultant.
• For PC/Windows NT/2000/XP: From Start > Run, then type cmd. This will bring up a DOS window. Then in that window, type ipconfig /all. Your Ethernet Hardware Address should appear in the Physical Address field. You may also consult the AcIS Internet Software & Manual for Windows NT, Microsoft Windows NT/2000 documentation, or a Residential Consultant.
• For Macintosh: Use an Ethernet 10BaseT Cable to connect your Macintosh Ethernet card to a live (activated) Ethernet jack. From Control Panel > TCP/IP, then click on Info, or from File > Get Info. The Ethernet Hardware Address is listed in the Hardware Address field. You may also consult the AcIS Internet Software & Manual for Macintosh, Macintosh documentation, or a Residential Consultant.