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Sorry, we have no information about 66-11-239-83.managemyvps.com. managemyvps.com is a domain controlled by two nameservers at managemyvps.com themselves. They are on different IP networks.

managemyvps.com
ns-soa records
ns1.managemyvps.com
+ 64.94.117.214 64.94.112.0/20 AS14744  
+ ---  
ns records
ns1.managemyvps.com
+ 64.94.117.214 64.94.112.0/20 AS14744  
+ ---  
ns2.managemyvps.com
+ 64.94.31.74 64.94.16.0/20 AS10913  
ip numbers using ptr to this host
66.11.239.83