--- service: a.root-servers.net start-period: '2013-10-23T00:00:00Z' end-period: '2013-10-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1633521550 dns-udp-queries-received-ipv6: 90145444 dns-tcp-queries-received-ipv4: 8013897 dns-tcp-queries-received-ipv6: 1559518 dns-udp-responses-sent-ipv4: 1631613737 dns-udp-responses-sent-ipv6: 90151887 dns-tcp-responses-sent-ipv4: 8513463 dns-tcp-responses-sent-ipv6: 104834