--- service: a.root-servers.net start-period: '2016-03-13T00:00:00Z' end-period: '2016-03-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3697446309 dns-udp-queries-received-ipv6: 344696908 dns-tcp-queries-received-ipv4: 26860221 dns-tcp-queries-received-ipv6: 3763888 dns-udp-responses-sent-ipv4: 3684787965 dns-udp-responses-sent-ipv6: 346374378 dns-tcp-responses-sent-ipv4: 23049456 dns-tcp-responses-sent-ipv6: 277226