Parked Domain?

Hello,

I am trying to park a domain, but I keep getting this error.

Parked Domain Additions

Nameserver ips for acgcorp.com are: 66.139.72.14,66.139.72.20 Sorry, that domain (acgcorp.com) is already pointed at an ip address that does not appear to use dns servers on this server or master servers! Please transfer the domain to this server's nameservers or have your admin add one of its nameservers ips to /etc/ips.remotedns and make the proper A entries on that remote nameserver!

my nameservers are set to ns1.geodns.net (66.139.72.14) and ns2.geodns.net (66.139.72.20).

I added one before and it worked just fine. Why am I getting this error?

Thanks
Jlimited