--- service: d.root-servers.net start-period: '2016-05-17T00:00:00Z' end-period: '2016-05-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7742748136 dns-udp-queries-received-ipv6: 761987543 dns-tcp-queries-received-ipv4: 33162706 dns-tcp-queries-received-ipv6: 753495 dns-udp-responses-sent-ipv4: 7718540248 dns-udp-responses-sent-ipv6: 761610338 dns-tcp-responses-sent-ipv4: 33106313 dns-tcp-responses-sent-ipv6: 753177