mail.pnca.edu has one IP number , via cname to ghs.google.com , but the reverse is vw-in-f121.1e100.net. mecog.de, jswmail.com, asp-pro.com, mail.dmc.tv, mail.tma.org and at least 100 other hosts point to the same IP. pnca.edu is delegated to three nameservers, however one delegated nameserver is missing in the zone. All nameservers are at pnca.edu themselves. Two of them are on the same IP network. Incoming mail for pnca.edu is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. pnca.edu has one IP number. mail.pnca.edu is hosted on a server in United States.