Uma consulta encadeada ao DNS
Consulta “labhost.bnr.ca.us”
IP address of “labhost.bnr.ca.us”
Query “labhost.bnr.ca.us”
Query “labhost.bnr.ca.us”
Query “labhost.bnr.ca.us”
Query “labhost.bnr.ca.us”
Endereço IP de “labhost.bnr.ca.us”
Referral to bnr.ca.us server