go
ca05.cira.ca, d.ca-servers.ca and ebhs-129-33-164-73.tor.usf.ibm.com point to 129.33.164.73.

ca05.cira.ca
a records
 
+ 129.33.164.73 129.33.160.0/21 AS19152 d.ca-servers.ca
+ --- d.ca-servers.ca

d.ca-servers.ca
a records
 
+ 129.33.164.73 129.33.160.0/21 AS19152 -
+ --- -

ebhs-129-33-164-73.tor.usf.ibm.com
a records
 
+ 129.33.164.73 129.33.160.0/21 AS19152 d.ca-servers.ca
+ --- d.ca-servers.ca
ip numbers of host
129.33.164.73
ptrs of ip numbers
d.ca-servers.ca
hostnames sharing ip with a-records
ca05.cira.ca
d.ca-servers.ca
ebhs-129-33-164-73.tor.usf.ibm.com
domains using this as nameserver
ca
ca-servers.ca