--- service: a.root-servers.net start-period: '2016-04-13T00:00:00Z' end-period: '2016-04-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5269053912 dns-udp-queries-received-ipv6: 358698707 dns-tcp-queries-received-ipv4: 69150563 dns-tcp-queries-received-ipv6: 3337422 dns-udp-responses-sent-ipv4: 5269344168 dns-udp-responses-sent-ipv6: 358251037 dns-tcp-responses-sent-ipv4: 58345223 dns-tcp-responses-sent-ipv6: 271220