--- service: a.root-servers.net start-period: '2016-10-20T00:00:00Z' end-period: '2016-10-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4268377164 dns-udp-queries-received-ipv6: 364455640 dns-tcp-queries-received-ipv4: 140732603 dns-tcp-queries-received-ipv6: 7241917 dns-udp-responses-sent-ipv4: 4240715311 dns-udp-responses-sent-ipv6: 363939096 dns-tcp-responses-sent-ipv4: 141328961 dns-tcp-responses-sent-ipv6: 7185175