127.0.0.1 is the Unix and BSD "loopback" device. Basically its a machine's own address for itself. Microsoft adapted the BSD network stack when it added the internet onto windows.
NetRange: 213.0.0.0 - 213.255.255.255 CIDR: 213.0.0.0/8 NetName: RIPE-213 NetHandle: NET-213-0-0-0-1 Parent: NetType: Allocated to RIPE NCC NameServer: NS-PRI.RIPE.NET NameServer: NS3.NIC.FR NameServer: SUNIC.SUNET.SE NameServer: AUTH00.NS.UU.NET NameServer: SEC1.APNIC.NET NameServer: SEC3.APNIC.NET NameServer: TINNIE.ARIN.NET Comment: These addresses have been further assigned to users in Comment: the RIPE NCC region. Contact information can be found in Comment: the RIPE database at http://www.ripe.net/whois RegDate: Updated: 2004-03-16