--- service: a.root-servers.net start-period: '2016-02-11T00:00:00Z' end-period: '2016-02-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5007607804 dns-udp-queries-received-ipv6: 363117405 dns-tcp-queries-received-ipv4: 60060293 dns-tcp-queries-received-ipv6: 2016815 dns-udp-responses-sent-ipv4: 4993263449 dns-udp-responses-sent-ipv6: 364790434 dns-tcp-responses-sent-ipv4: 51817953 dns-tcp-responses-sent-ipv6: 280315