--- service: a.root-servers.net start-period: '2014-02-09T00:00:00Z' end-period: '2014-02-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1222483456 dns-udp-queries-received-ipv6: 77237709 dns-tcp-queries-received-ipv4: 7042026 dns-tcp-queries-received-ipv6: 1066901 dns-udp-responses-sent-ipv4: 1222534881 dns-udp-responses-sent-ipv6: 77233115 dns-tcp-responses-sent-ipv4: 7047234 dns-tcp-responses-sent-ipv6: 102