I have contacted OpenSRS who host the domain name and they are saying name servers are propagated correctly. There is timing out. See below from them. The account has not been suspended by OpenSRS.
As promised please find the dig result down below:
dig ns @netsuitesupport.com
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns @netsuitesupport.com
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached
[prod][email protected]:~$ dig netsuitesupport.com