go
mail.coldhardcash.com and mail-backup.coldhardcash.com point to 64.255.171.110.

mail-backup.coldhardcash.com
a records
 
+ 64.255.171.110 64.255.160.0/19 AS5068 mail.webquest.net
+ --- mail.webquest.net

mail.coldhardcash.com
a records
 
+ 64.255.171.110 64.255.160.0/19 AS5068 mail.webquest.net
+ --- mail.webquest.net

mail.webquest.net
ptr records
 
+ 64.255.171.110 64.255.160.0/19 AS5068 -
+ --- -
ip numbers of host
64.255.171.110
ptrs of ip numbers
mail.webquest.net
hostnames sharing ip with a-records
mail-backup.coldhardcash.com
mail.coldhardcash.com