--- service: a.root-servers.net start-period: '2014-01-31T00:00:00Z' end-period: '2014-01-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1106024476 dns-udp-queries-received-ipv6: 66310661 dns-tcp-queries-received-ipv4: 6571875 dns-tcp-queries-received-ipv6: 982437 dns-udp-responses-sent-ipv4: 1105370981 dns-udp-responses-sent-ipv6: 66305319 dns-tcp-responses-sent-ipv4: 6561102 dns-tcp-responses-sent-ipv6: 146