What are your nameservers?

The UmbHost UmbSmall, UmbOne, UmbTen, UmbTwenty and UmbLimited nameservers will be provided in your “New Account Information” email, alternatively, you can view them in your account here:

https://umbhost.net/clients/manage-dns-zones 

The WPOne or UmbOne (Linux) nameservers are:

ns1.stackdns.com

ns2.stackdns.com

ns3.stackdns.com

ns4.stackdns.com