--- service: a.root-servers.net start-period: '2013-12-02T00:00:00Z' end-period: '2013-12-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1515436656 dns-udp-queries-received-ipv6: 78458844 dns-tcp-queries-received-ipv4: 7923855 dns-tcp-queries-received-ipv6: 1277073 dns-udp-responses-sent-ipv4: 1514188252 dns-udp-responses-sent-ipv6: 78464572 dns-tcp-responses-sent-ipv4: 8393513 dns-tcp-responses-sent-ipv6: 192