--- service: a.root-servers.net start-period: '2013-10-16T00:00:00Z' end-period: '2013-10-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1641647615 dns-udp-queries-received-ipv6: 96329532 dns-tcp-queries-received-ipv4: 8576950 dns-tcp-queries-received-ipv6: 1555004 dns-udp-responses-sent-ipv4: 1641240078 dns-udp-responses-sent-ipv6: 96293555 dns-tcp-responses-sent-ipv4: 9189707 dns-tcp-responses-sent-ipv6: 17250