--- service: a.root-servers.net start-period: '2015-03-04T00:00:00Z' end-period: '2015-03-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2871724103 dns-udp-queries-received-ipv6: 222499727 dns-tcp-queries-received-ipv4: 17143144 dns-tcp-queries-received-ipv6: 2164042 dns-udp-responses-sent-ipv4: 2852022900 dns-udp-responses-sent-ipv6: 221781460 dns-tcp-responses-sent-ipv4: 14611611 dns-tcp-responses-sent-ipv6: 1262946