--- service: a.root-servers.net start-period: '2013-10-12T00:00:00Z' end-period: '2013-10-12T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1542630280 dns-udp-queries-received-ipv6: 84166744 dns-tcp-queries-received-ipv4: 6817132 dns-tcp-queries-received-ipv6: 1495550 dns-udp-responses-sent-ipv4: 1541278343 dns-udp-responses-sent-ipv6: 84165309 dns-tcp-responses-sent-ipv4: 7313245 dns-tcp-responses-sent-ipv6: 18178