Resolved. Just in case anyone else has this issue, please try this resolution first:
On Windows, issue the following command as an administrator:
C:\> ipconfig /flushdns
On Mac OS, issue this command:
bash-2.05a$ dscacheutil -flushcache
This command flushes your local cache of DNS (the system that resolves ggftw.com to an IP address that your computer can use). To speed up page loads, your computer caches this information (stores a temporary copy -- fast) so it doesn't have to connect to the internet every time and retrieve the information (slow). This particular issue was caused by a stale (out-of-date) DNS cache.