--- service: a.root-servers.net start-period: '2014-03-31T00:00:00Z' end-period: '2014-03-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2341654402 dns-udp-queries-received-ipv6: 87846431 dns-tcp-queries-received-ipv4: 11732884 dns-tcp-queries-received-ipv6: 941287 dns-udp-responses-sent-ipv4: 2340338833 dns-udp-responses-sent-ipv6: 87815771 dns-tcp-responses-sent-ipv4: 11744081 dns-tcp-responses-sent-ipv6: 118