ns4w.tol.it has one IP number , which also has a corresponding reverse pointer. dwss.it, zerp.it, al59.com, pbsoft.it, fmg.mi.it and at least 100 other hosts use this as a nameserver. tol.it is a domain controlled by two nameservers at tol.it themselves. They are on the same IP network. Incoming mail for tol.it is handled by one mailserver at alicom.com. tol.it has one IP number. ns4w.tol.it is hosted on a server in Italy.