Simply go to Address Leases under the Scope and you can view both the client IP address and the Unique ID, which is the MAC address. You can either go into the DHCP console on Windows Server 2003/2008 or you can log into your wireless router at home, if that is what you are using.

Whether you are in a corporate environment or at home, each computer is being assigned an IP address from a DHCP server (unless it’s a static network, which is rare). The simplest way to get an IP address from a MAC address is to check out the DHCP server, if possible. If you’re sure the MAC address is a computer, then try the methods below to determine the IP address. You can also find out if the MAC address is from a switch or other networking device from HP, CISCO, etc. There have been a few interesting comments on this post, I encourage you to read them if you want to learn more about this mechanism.If you suspect the MAC address is a printer, first check out this site below to see if it matches a major manufacturer:

prepend the link-local prefix: fe80::5074:f2ff:feb1:a87fĪ converter to do the same operation in reverse is available here.

replace first octet with newly calculated one: 5074:f2ff:feb1:a87f.

convert octet back to hexadecimal: 01010000 -> 50.

convert the first octet from hexadecimal to binary: 52 -> 01010010.

reformat to IPv6 notation 5274:f2ff:feb1:a87f.take the mac address: for example 52:74:f2:b1:a8:7f.Here’s the conversion process step by step: This link-local IPv6 is infered from the NIC’s mac address.Ī mac address is 48 bits, an IPv6 address is 128 bits. Instead of getting an address via DHCP, a NIC will hop on the network with a link-local IPv6 address and with this will have to ability to do further configuration automatically (soliciting neighbors, router, et cetera). Link-local IPv6 addresses are used as part of the IPv6 network auto-configuration process.

Convert mac address to ipv4