Can anyone shed some light as to what is happening with Register.com?

[Joseph Nuara <joe () tess moorecap com>]

We are no longer able to resolve A records for sites that they host. 
The NOC has not been able to provide any color and the main lines are tied up --they were able to tell me they were 
having a DNS issue but that was it. Thanks in advance for any info that you can share. 

Joe