--- service: a.root-servers.net start-period: '2013-11-30T00:00:00Z' end-period: '2013-11-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1293420480 dns-udp-queries-received-ipv6: 69627180 dns-tcp-queries-received-ipv4: 6554805 dns-tcp-queries-received-ipv6: 1202763 dns-udp-responses-sent-ipv4: 1291691386 dns-udp-responses-sent-ipv6: 69630272 dns-tcp-responses-sent-ipv4: 7000000 dns-tcp-responses-sent-ipv6: 243