--- service: i.root-servers.net start-period: '2014-03-28T00:00:00Z' end-period: '2014-03-29T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2976948286 dns-udp-queries-received-ipv6: 184259054 dns-tcp-queries-received-ipv4: 6701060 dns-tcp-queries-received-ipv6: 317652 dns-udp-responses-sent-ipv4: 2910340909 dns-udp-responses-sent-ipv6: 184524469 dns-tcp-responses-sent-ipv4: 6676003 dns-tcp-responses-sent-ipv6: 320150