go
mail.pgh.directstuff.com are subdomains to this hostname. directstuff.com is a domain controlled by six nameservers. All of them are on different IP networks. Incoming mail for directstuff.com is handled by one mailserver having a total of two IP numbers. They are on different IP networks. directstuff.com has one IP number.

directstuff.com
a records
 
+ 63.117.23.8 63.117.23.0/24 AS40397  
+ ---  
ns-soa records
pdns1.ultradns.net
+ 204.74.108.1 204.74.108.0/24 AS12008 -
+ --- -
ns records
pdns1.ultradns.net
+ 204.74.108.1 204.74.108.0/24 AS12008 -
+ --- -
pdns2.ultradns.net
+ 204.74.109.1 204.74.109.0/24 AS12008 -
pdns3.ultradns.org
+ 199.7.68.1 199.7.68.0/24 AS12008 -
pdns4.ultradns.org
+ 199.7.69.1 199.7.69.0/24 AS12008 -
pdns5.ultradns.info
+ 204.74.114.1 204.74.114.0/24 AS12008 -
pdns6.ultradns.co.uk
+ 204.74.115.1 204.74.115.0/24 AS12008 -
mx records
smtp.wip.digitalriver.com
+ 208.79.251.130 208.79.248.0/21 AS32081 -
+ --- -
+ 209.87.180.71 209.87.180.0/24 AS8182 -
subdomains
*.pgh.directstuff.com
mail.pgh.directstuff.com