--- service: a.root-servers.net start-period: '2014-04-13T00:00:00Z' end-period: '2014-04-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2460794701 dns-udp-queries-received-ipv6: 85259305 dns-tcp-queries-received-ipv4: 11838694 dns-tcp-queries-received-ipv6: 1300231 dns-udp-responses-sent-ipv4: 2460583852 dns-udp-responses-sent-ipv6: 85250861 dns-tcp-responses-sent-ipv4: 11759309 dns-tcp-responses-sent-ipv6: 113