--- service: a.root-servers.net start-period: '2015-02-23T00:00:00Z' end-period: '2015-02-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2913150178 dns-udp-queries-received-ipv6: 226822397 dns-tcp-queries-received-ipv4: 17259013 dns-tcp-queries-received-ipv6: 2363496 dns-udp-responses-sent-ipv4: 2904415265 dns-udp-responses-sent-ipv6: 226382327 dns-tcp-responses-sent-ipv4: 14980969 dns-tcp-responses-sent-ipv6: 1329719