--- service: a.root-servers.net start-period: '2017-01-06T00:00:00Z' end-period: '2017-01-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5558754935 dns-udp-queries-received-ipv6: 589651797 dns-tcp-queries-received-ipv4: 213116983 dns-tcp-queries-received-ipv6: 9233769 dns-udp-responses-sent-ipv4: 5542999017 dns-udp-responses-sent-ipv6: 585893775 dns-tcp-responses-sent-ipv4: 213296355 dns-tcp-responses-sent-ipv6: 9571588