--- service: a.root-servers.net start-period: '2016-12-27T00:00:00Z' end-period: '2016-12-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4232546890 dns-udp-queries-received-ipv6: 465545649 dns-tcp-queries-received-ipv4: 163678495 dns-tcp-queries-received-ipv6: 6994101 dns-udp-responses-sent-ipv4: 4228562363 dns-udp-responses-sent-ipv6: 465377491 dns-tcp-responses-sent-ipv4: 164192160 dns-tcp-responses-sent-ipv6: 7017685