Summary
mail4.itvision.ca has one IP number , but the reverse is
mail4.hivelocity.net.
mail.yifc.org,
mx.proms4.name,
mail4.ouiz.com,
mail4.quadb.com,
mail4.skeeo.com and at least 98 other hosts point to the same IP.
crno.ca,
aolcollege.com,
huntfitness.com,
terristravel.com,
wakeboarding.org and at least four other hosts use this as a mailserver.
itvision.ca is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for
itvision.ca is handled by one mailserver at
itvision.ca.cust.hostedemail.com.
itvision.ca has one IP number.
mail4.itvision.ca is hosted on a server in United States even though the hostname implies Canada.