I don't think this will work, as most registrars do not expose APIs onto their DNS settings. Therefore, you would have to change your name servers to a DNS prov

I don't think this will work, as most registrars do not expose APIs onto their DNS settings. Therefore, you would have to change your name servers to a DNS provider which does provide such access anyway. If you do all this just to insert a couple of A records, you might as well just change those records. It's not that hard and registrars tend to have decent instructions. See dnsimple.com for such a service. [not affiliated]