Go through the last 10, 20 pages of this thread and try all the links previously posted here...
One or two still work. On occassion. Keep in mind that a working link may not work for you when you try it. Then may work if you try again later. This changes from hour to hour, day to day. Location may have impact as well. I had my father try from Europe and it worked, but not from China, when my wife tried half an hour earlier. Helps to have family (or friends) helping out on different continents... failing that, using multiple VPN's may help. Using different accounts is a must. A link that invariably does't work with one account, sometimes turns out to work like a charm with another. Then there are the different payment options. Paypal may work where a card linked to to it has not. Or vice versa. Make sure to use different devices with different accounts, though... What? You thought registering domains, essentially for free, would be quick and easy?
And that's the easy part. The hard part comes when, after you'd put in lots of creativity and hard work and successfully registered some domains, NetSol locks you out of your account! Or maybe not...
Good luck!
Andrew