go
www.blackcat.com has one IP number , which is the same as for blackcat.com, but the reverse is va-67-76-163-210.sta.embarqhsd.net. blackcat.com, ns04.mudron.net, mail.blackcat.com and va-67-76-163-210.sta.embarqhsd.net point to the same IP. blackcat.com is a domain controlled by two nameservers at worldnic.com. They are on different IP networks. Incoming mail for blackcat.com is handled by two mailservers on different IP networks. www.blackcat.com is hosted on a server in United States.

www.blackcat.com
a records
 
+ 67.76.163.210 67.76.160.0/20 AS14905 va-67-76-163-210.sta.embarqhsd.net
+ --- va-67-76-163-210.sta.embarqhsd.net

*.blackcat.com
a records
 
+ 67.76.163.210 67.76.160.0/20 AS14905 va-67-76-163-210.sta.embarqhsd.net
+ --- va-67-76-163-210.sta.embarqhsd.net

blackcat.com
a records
 
+ 67.76.163.210 67.76.160.0/20 AS14905 va-67-76-163-210.sta.embarqhsd.net
+ --- va-67-76-163-210.sta.embarqhsd.net
ns-soa records
ns19.worldnic.com
+ 205.178.190.10 205.178.160.0/19 AS6245 -
+ --- -
ns records
ns19.worldnic.com
+ 205.178.190.10 205.178.160.0/19 AS6245 -
+ --- -
ns20.worldnic.com
+ 205.178.144.10 205.178.144.0/24 AS19871 -
mx records
mail.blackcat.com
+ 67.76.163.210 67.76.160.0/20 AS14905 va-67-76-163-210.sta.embarqhsd.net
+ --- va-67-76-163-210.sta.embarqhsd.net
mail.mudron.net
+ 65.102.217.1 65.100.0.0/14 AS209  
+ ---  
ip numbers of host
67.76.163.210
ptrs of ip numbers
va-67-76-163-210.sta.embarqhsd.net
hostnames sharing ip with a-records
*.blackcat.com
blackcat.com
mail.blackcat.com
ns04.mudron.net
va-67-76-163-210.sta.embarqhsd.net
domains using this as nameserver under another name
mudron.net
domains using this as mailserver under another name
blackcat.com
mudron.net