--- service: a.root-servers.net start-period: '2015-03-14T00:00:00Z' end-period: '2015-03-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2623681947 dns-udp-queries-received-ipv6: 211974417 dns-tcp-queries-received-ipv4: 17692365 dns-tcp-queries-received-ipv6: 2287094 dns-udp-responses-sent-ipv4: 2616880057 dns-udp-responses-sent-ipv6: 211607674 dns-tcp-responses-sent-ipv4: 15732806 dns-tcp-responses-sent-ipv6: 1631378