Summary
carroll.ia.us is delegated to three nameservers, however one delegated nameserver is missing in the zone and one other nameserver is listed instead. Two nameservers have the same IP number. Two of them are on the same IP network.
ac.za,
alt.za,
acrx.com,
up.ac.za,
agrs.org and at least 67 other hosts share nameservers with this domain.