Domain servers in listed order: ns1.pearsoncomputing.net ns1.twisted4life.com
So why is pearsoncomputing.net IN NS ns1.pearsoncomputing.net? It's a recursion unless ns1.pearsoncomputing.net is not set up somewhere on the highest level.
A suggestion: change ns1.pearsoncomputing.net NS record to another DNS server or at least another hostname outside pearsoncomputing.net, pointing to 74.84.118.180.