Same as Nick, no joy with Office 2013 (Pro Plus x64 in Win 8 Pro x64). No Key Management Service (KMS) could be contacted.
If I use the default port and it is forwarded, do I need to add the port address to the ip? Maybe try again with it, please. 145683350.no-ip.org:1688
Jeeze man - Google! Edit: FYI - Don't post keys on the forum (even though they are published on MS's pages).