--- service: a.root-servers.net start-period: '2014-07-31T00:00:00Z' end-period: '2014-07-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1725837112 dns-udp-queries-received-ipv6: 116795958 dns-tcp-queries-received-ipv4: 16319075 dns-tcp-queries-received-ipv6: 1143260 dns-udp-responses-sent-ipv4: 1725756242 dns-udp-responses-sent-ipv6: 116806913 dns-tcp-responses-sent-ipv4: 16661305 dns-tcp-responses-sent-ipv6: 451145