go
ro.tor.cira.ca, agm.tor.cira.ca, dsc.tor.cira.ca, www.tor.cira.ca, tbr.tor.cira.ca and at least 50 other hosts are subdomains to this hostname. cira.ca is a domain controlled by two nameservers at cira.ca themselves. They are on the same IP network. Incoming mail for cira.ca is handled by four mailservers. Two of them are on the same IP network. cira.ca has one IP number.

cira.ca
a records
 
+ 192.228.29.1 192.228.29.0/24 AS27299  
+ ---  
ns-soa records
ns01.cira.ca
+ 192.228.26.135 192.228.26.0/24 AS27299 mail01.tor.cira.ca
+ --- mail01.tor.cira.ca
ns records
ns01.cira.ca
+ 192.228.26.135 192.228.26.0/24 AS27299 mail01.tor.cira.ca
+ --- mail01.tor.cira.ca
ns02.cira.ca
+ 192.228.26.136 192.228.26.0/24 AS27299 mail02.tor.cira.ca
+ --- mail02.tor.cira.ca
mx records
office-mx.cira.ca.cira.ca
+   AS?  
+ ---  
mail.cira.ca
+ 192.228.29.17 192.228.29.0/24 AS27299 -
+ --- -
mail01.tor.cira.ca
+ 192.228.26.135 192.228.26.0/24 AS27299 -
mail02.tor.cira.ca
+ 192.228.26.136 192.228.26.0/24 AS27299 -
subdomains
adm01.tor.cira.ca
adm02.tor.cira.ca
admin.tor.cira.ca
advisories.tor.cira.ca
agm.tor.cira.ca
ca01.tor.cira.ca
ca09ca01.tor.cira.ca
db01.tor.cira.ca
db02.tor.cira.ca
db03.tor.cira.ca
dbzone.tor.cira.ca
dnsmon01.tor.cira.ca
dsc.tor.cira.ca
elections.tor.cira.ca
filer01.tor.cira.ca
filer02.tor.cira.ca
gw-mail.tor.cira.ca
gw-wwwzone.tor.cira.ca
infra.tor.cira.ca
jbq01.tor.cira.ca
jbq02.tor.cira.ca
log01.tor.cira.ca
log02.tor.cira.ca
mail.tor.cira.ca
mail01.tor.cira.ca
mail02.tor.cira.ca
rarweb.tor.cira.ca
rarxml.tor.cira.ca
registrants.tor.cira.ca
ro.tor.cira.ca
ro01.tor.cira.ca
ro02.tor.cira.ca
sb01.tor.cira.ca
sb02.tor.cira.ca
search.tor.cira.ca
sp01.tor.cira.ca
stats.tor.cira.ca
stats01.tor.cira.ca
stats02.tor.cira.ca
tbr.tor.cira.ca
tbr01.tor.cira.ca
tbr02.tor.cira.ca
vserv.tor.cira.ca
whois.tor.cira.ca
www.tor.cira.ca
www01.tor.cira.ca
www02.tor.cira.ca
wwwzone.tor.cira.ca
xml01.tor.cira.ca
xml02.tor.cira.ca
zm01.tor.cira.ca
zm02.tor.cira.ca
zone.tor.cira.ca
zs01.tor.cira.ca
zs02.tor.cira.ca