--- service: a.root-servers.net start-period: '2013-11-17T00:00:00Z' end-period: '2013-11-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1336571554 dns-udp-queries-received-ipv6: 89322887 dns-tcp-queries-received-ipv4: 6138534 dns-tcp-queries-received-ipv6: 1295814 dns-udp-responses-sent-ipv4: 1334309775 dns-udp-responses-sent-ipv6: 89337283 dns-tcp-responses-sent-ipv4: 6640074 dns-tcp-responses-sent-ipv6: 32208