--- service: a.root-servers.net start-period: '2017-01-05T00:00:00Z' end-period: '2017-01-05T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4560310783 dns-udp-queries-received-ipv6: 487991910 dns-tcp-queries-received-ipv4: 184725167 dns-tcp-queries-received-ipv6: 7512397 dns-udp-responses-sent-ipv4: 4558516091 dns-udp-responses-sent-ipv6: 487767857 dns-tcp-responses-sent-ipv4: 186016328 dns-tcp-responses-sent-ipv6: 7556162