--- service: d.root-servers.net start-period: '2016-04-23T00:00:00Z' end-period: '2016-04-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4136590289 dns-udp-queries-received-ipv6: 581344218 dns-tcp-queries-received-ipv4: 37421985 dns-tcp-queries-received-ipv6: 568702 dns-udp-responses-sent-ipv4: 4120841000 dns-udp-responses-sent-ipv6: 581109204 dns-tcp-responses-sent-ipv4: 37322228 dns-tcp-responses-sent-ipv6: 568458