--- service: a.root-servers.net start-period: '2016-07-27T00:00:00Z' end-period: '2016-07-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4096538978 dns-udp-queries-received-ipv6: 491766441 dns-tcp-queries-received-ipv4: 99740476 dns-tcp-queries-received-ipv6: 8341958 dns-udp-responses-sent-ipv4: 4096265068 dns-udp-responses-sent-ipv6: 491706266 dns-tcp-responses-sent-ipv4: 80472064 dns-tcp-responses-sent-ipv6: 1250319