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, udg.edu and at least 76 other hosts use this as a nameserver. root.ns1.cesca.es are subdomains to this hostname. 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.