?????? WHOIS. ????? ???????? ?? ?????. ???????? ?????? ?????: DIG, PING, TRACEROUTE, NSLOOKUP. ??????????? ?????? PTR. http://24Whois.ru/?data=ibs3457.com%2Fquestion%2Fevaluacion-del-esfuerzo-del-cliente-ces-comprendiendo-la-experiencia-del-cliente%2F&t=whois&path=