It depends on the type of account you have with us.   If you register or transfer a domain at the same time you order hosting service, the DNS server are configured automatically.  If your domain is parked with us, the nameservers are as follows:

ns244.lightboundhosting.com

ns84.lightboundhosting.com

ns85.lightboundhosting.com

Online DNS management is only available through hosting accounts.  For DNS changes on parked domains, email hostmaster@lightboundhosting.com.