Summary
ns1.cesca.es has one IP number , which also has a corresponding reverse pointer.
ns1.cesca.cat point to the same IP.
es,
icc.es,
uic.es,
uic.cat,
hgv.cat and at least 70 other hosts use this as a nameserver.
cesca.es is a domain controlled by four nameservers. Some of them are on the same IP network. Incoming mail for
cesca.es is handled by two mailservers at
cesca.es themselves. They are on the same IP network.
ns1.cesca.es is hosted on a server in Spain.