--- service: d.root-servers.net start-period: '2016-04-04T00:00:00Z' end-period: '2016-04-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4518974925 dns-udp-queries-received-ipv6: 608338154 dns-tcp-queries-received-ipv4: 34869605 dns-tcp-queries-received-ipv6: 545830 dns-udp-responses-sent-ipv4: 4496562362 dns-udp-responses-sent-ipv6: 608080401 dns-tcp-responses-sent-ipv4: 34834786 dns-tcp-responses-sent-ipv6: 545816