--- service: a.root-servers.net start-period: '2014-07-18T00:00:00Z' end-period: '2014-07-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1646484166 dns-udp-queries-received-ipv6: 93270430 dns-tcp-queries-received-ipv4: 16746898 dns-tcp-queries-received-ipv6: 1180777 dns-udp-responses-sent-ipv4: 1646410232 dns-udp-responses-sent-ipv6: 93277359 dns-tcp-responses-sent-ipv4: 17030178 dns-tcp-responses-sent-ipv6: 472772