--- service: a.root-servers.net start-period: '2016-05-27T00:00:00Z' end-period: '2016-05-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6160258718 dns-udp-queries-received-ipv6: 407656920 dns-tcp-queries-received-ipv4: 88395062 dns-tcp-queries-received-ipv6: 5148193 dns-udp-responses-sent-ipv4: 6160008939 dns-udp-responses-sent-ipv6: 407386429 dns-tcp-responses-sent-ipv4: 74915964 dns-tcp-responses-sent-ipv6: 309805